mirror of
https://github.com/jcreek/advent-of-code.git
synced 2026-09-16 10:52:11 +00:00
Compare commits
11 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 Josh Creek
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Josh Creek
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Josh Creek
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Josh Creek
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Josh Creek
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af8d99e953 | ||
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Josh Creek
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4eaa778adb | ||
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Josh Creek
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Josh Creek
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Josh Creek
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5e9be1b66b | ||
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Josh Creek
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8d7d4f20ac | ||
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Josh Creek
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a7c732314b |
@@ -0,0 +1,9 @@
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|||||||
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<Project Sdk="Microsoft.NET.Sdk">
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||||||
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||||||
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<PropertyGroup>
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||||||
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<TargetFramework>net8.0</TargetFramework>
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||||||
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<ImplicitUsings>enable</ImplicitUsings>
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||||||
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<Nullable>enable</Nullable>
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||||||
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</PropertyGroup>
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||||||
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||||||
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</Project>
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||||||
@@ -0,0 +1,131 @@
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|||||||
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using System.Text;
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||||||
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||||||
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namespace AOC.Helpers;
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||||||
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||||||
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public static class TwoDimensionalArrays
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||||||
|
{
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||||||
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public static char[,] Make2DArrayFromStringArray(string[] stringArray)
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||||||
|
{
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||||||
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int rows = stringArray.Length;
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int cols = stringArray[0].Length;
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||||||
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char[,] array = new char[rows, cols];
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||||||
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for (int r = 0; r < rows; r++)
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||||||
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{
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||||||
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for (int c = 0; c < cols; c++)
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||||||
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{
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||||||
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array[r, c] = stringArray[r][c];
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||||||
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}
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||||||
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}
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||||||
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||||||
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return array;
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||||||
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}
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||||||
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||||||
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public static string TwoDimensionalArrayToString(char[,] array)
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||||||
|
{
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int rows = array.GetLength(0);
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int cols = array.GetLength(1);
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||||||
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StringBuilder sb = new(rows * (cols + 1)); // performance optimisation
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||||||
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||||||
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for (int r = 0; r < rows; r++)
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{
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for (int c = 0; c < cols; c++)
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||||||
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{
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sb.Append(array[r, c]);
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}
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||||||
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sb.AppendLine(); // end of row
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}
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||||||
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return sb.ToString();
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}
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||||||
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/// <summary>
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/// Enumerates all cells in a 2D array, returning each cell's row index,
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/// column index, and value.
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||||||
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/// </summary>
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||||||
|
/// <typeparam name="T">The element type of the 2D array.</typeparam>
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|
/// <param name="grid">The 2D array to enumerate.</param>
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||||||
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/// <returns>
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||||||
|
/// An <see cref="IEnumerable{T}" /> of tuples containing the row index,
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||||||
|
/// column index, and value of each cell in the array, iterated in row-major order.
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/// </returns>
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||||||
|
/// <example>
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||||||
|
/// The following example prints every cell in a character grid:
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||||||
|
/// <code>
|
||||||
|
/// char[,] grid = {
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||||||
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/// { 'A', 'B', 'C' },
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/// { 'D', 'E', 'F' }
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||||||
|
/// };
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||||||
|
///
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|
/// foreach (var (row, column, value) in Cells(grid))
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|
/// {
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|
/// Console.WriteLine($"[{row}, {column}] = {value}");
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|
/// }
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/// </code>
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|
/// This produces:
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|
/// <code>
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|
/// [0, 0] = A
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/// [0, 1] = B
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/// [0, 2] = C
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/// [1, 0] = D
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/// [1, 1] = E
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|
/// [1, 2] = F
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|
/// </code>
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|
/// </example>
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|
public static IEnumerable<(int row, int column, T value)> Cells<T>(T[,] grid)
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||||||
|
{
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|
int rows = grid.GetLength(0);
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||||||
|
int cols = grid.GetLength(1);
|
||||||
|
|
||||||
|
for (int r = 0; r < rows; r++)
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|
{
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|
for (int c = 0; c < cols; c++)
|
||||||
|
{
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|
yield return (r, c, grid[r, c]);
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||||||
|
}
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||||||
|
}
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||||||
|
}
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||||||
|
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public static List<(int row, int column)> CheckAllSurroundingCellsForCharacter(
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char[,] array,
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||||||
|
int startRow,
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|
int startColumn,
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|
char characterToCheckFor)
|
||||||
|
{
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|
int totalRows = array.GetLength(0);
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|
int totalColumns = array.GetLength(1);
|
||||||
|
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||||||
|
List<(int row, int column)> results = new();
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||||||
|
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||||||
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for (int rowOffset = -1; rowOffset <= 1; rowOffset++)
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|
{
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|
for (int colOffset = -1; colOffset <= 1; colOffset++)
|
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|
{
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||||||
|
// Skip the centre cell
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||||||
|
if (rowOffset == 0 && colOffset == 0)
|
||||||
|
{
|
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|
continue;
|
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|
}
|
||||||
|
|
||||||
|
int row = startRow + rowOffset;
|
||||||
|
int column = startColumn + colOffset;
|
||||||
|
|
||||||
|
// Bounds check
|
||||||
|
if (row < 0 || row >= totalRows || column < 0 || column >= totalColumns)
|
||||||
|
{
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (array[row, column] == characterToCheckFor)
|
||||||
|
{
|
||||||
|
results.Add((row, column));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return results;
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -20,6 +20,13 @@
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|||||||
</Content>
|
</Content>
|
||||||
</ItemGroup>
|
</ItemGroup>
|
||||||
|
|
||||||
|
<ItemGroup>
|
||||||
|
<None Remove="Y2016\Data\**"/>
|
||||||
|
<Content Include="Y2016\Data\**">
|
||||||
|
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
|
||||||
|
</Content>
|
||||||
|
</ItemGroup>
|
||||||
|
|
||||||
<ItemGroup>
|
<ItemGroup>
|
||||||
<None Remove="Y2021\Data\**"/>
|
<None Remove="Y2021\Data\**"/>
|
||||||
<Content Include="Y2021\Data\**">
|
<Content Include="Y2021\Data\**">
|
||||||
@@ -48,12 +55,19 @@
|
|||||||
</Content>
|
</Content>
|
||||||
</ItemGroup>
|
</ItemGroup>
|
||||||
|
|
||||||
|
<ItemGroup>
|
||||||
|
<None Remove="Y2025\Data\**"/>
|
||||||
|
<Content Include="Y2025\Data\**">
|
||||||
|
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
|
||||||
|
</Content>
|
||||||
|
</ItemGroup>
|
||||||
|
|
||||||
<ItemGroup>
|
<ItemGroup>
|
||||||
<PackageReference Include="Creek.HelpfulExtensions" Version="1.4.3"/>
|
<PackageReference Include="Creek.HelpfulExtensions" Version="1.4.3"/>
|
||||||
<PackageReference Include="Microsoft.Data.Sqlite" Version="9.0.0" />
|
<PackageReference Include="Microsoft.Data.Sqlite" Version="9.0.0"/>
|
||||||
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
|
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
|
||||||
<PackageReference Include="NUnit" Version="4.2.2" />
|
<PackageReference Include="NUnit" Version="4.2.2"/>
|
||||||
<PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
|
<PackageReference Include="NUnit3TestAdapter" Version="4.6.0"/>
|
||||||
<PackageReference Include="NUnit.Analyzers" Version="4.4.0">
|
<PackageReference Include="NUnit.Analyzers" Version="4.4.0">
|
||||||
<PrivateAssets>all</PrivateAssets>
|
<PrivateAssets>all</PrivateAssets>
|
||||||
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
|
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
|
||||||
@@ -64,4 +78,8 @@
|
|||||||
</PackageReference>
|
</PackageReference>
|
||||||
</ItemGroup>
|
</ItemGroup>
|
||||||
|
|
||||||
|
<ItemGroup>
|
||||||
|
<ProjectReference Include="..\AOC.Helpers\AOC.Helpers.csproj"/>
|
||||||
|
</ItemGroup>
|
||||||
|
|
||||||
</Project>
|
</Project>
|
||||||
|
|||||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1 @@
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|||||||
|
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||||||
@@ -0,0 +1,200 @@
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|||||||
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||||||
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||||||
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||||||
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||||||
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||||||
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||||||
|
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||||||
|
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|
||||||
|
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|
||||||
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||||||
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||||||
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|
||||||
|
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|
||||||
|
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|
||||||
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||||||
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||||||
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|
||||||
|
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|
||||||
|
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||||||
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||||||
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|
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|
||||||
|
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||||||
|
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|
||||||
|
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|
||||||
|
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||||||
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|
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|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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|
||||||
|
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||||||
|
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||||||
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|
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|
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|
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|
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|
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|
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|
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|
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2412222252411424552422341634233532224542252223232322444813278521942123134334424242435333422144423428
|
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||||||
|
725 278 2564 666 77 9 598 29 179 389 58 8 859 756 97 63 6366 672 387 395 27 797 698 836 35 527 98 3 588 37 5 119 414 316 615 971 3 15 71 635 53 357 27 9723 176 8613 8 898 288 92 19 3612 899 54 56 785 253 25 152 452 76 96 548 76 6 8 278 39 422 41 7 54 12 879 8987 438 481 27 13 74 695 542 51 77 221 41 1577 69 97 722 3 4429 97 897 686 683 169 23 66 84 7194 33 76 7 6279 56 85 1229 411 641 991 15 65 66 37 41 178 27 32 462 92 4636 62 243 742 22 13 2982 9129 297 638 59 46 49 62 285 788 811 141 191 9126 123 371 627 538 58 32 2224 18 9221 85 9 57 31 82 19 72 957 11 86 195 284 16 7 598 758 488 52 78 67 166 579 72 37 71 18 537 14 8285 69 418 28 16 9781 58 9756 719 488 56 71 79 54 516 7544 335 437 61 7856 516 91 18 33 415 933 352 998 38 868 157 17 73 22 7 347 84 881 58 489 61 68 5141 39 434 833 114 289 5136 77 46 7 736 1 388 32 73 162 393 1 477 39 1843 4938 2 57 49 92 425 64 1244 98 43 7113 99 351 68 42 44 2 717 2 374 527 81 7 83 617 45 6 868 38 98 54 61 928 6337 65 1 391 66 81 6 158 389 9843 469 254 674 63 16 21 212 13 825 59 837 35 636 46 5 17 199 87 716 8 579 2554 76 422 92 89 39 8 157 798 73 74 9 67 13 61 534 42 45 48 9896 8 51 413 8114 4112 45 53 938 39 344 12 36 93 45 97 61 724 15 943 84 336 7612 147 361 889 88 841 84 61 86 773 644 38 74 76 89 74 762 23 9421 43 3583 34 231 84 25 629 4757 94 86 1616 74 9593 64 865 89 32 97 792 1733 629 69 488 4831 47 7 388 55 83 27 98 9777 88 638 828 5 46 74 296 523 973 1 384 354 96 14 98 79 94 13 4 4 452 256 3217 9 528 42 167 492 34 46 78 7978 82 6495 23 318 54 6118 4111 94 29 39 93 5 96 16 3 54 56 372 297 93 42 659 9 16 48 3655 6952 89 73 713 431 995 763 8 69 54 5 3 344 94 83 81 4 9 98 24 38 169 2535 525 9684 896 88 71 863 567 57 626 9244 34 33 67 49 339 92 843 198 952 783 61 48 618 2446 56 948 54 316 29 479 934 79 33 958 4 964 543 96 89 795 23 1 57 97 939 2 23 39 595 83 38 4 977 93 66 89 833 345 544 998 16 63 924 51 35 79 71 8 22 99 436 3 657 498 35 62 19 3978 353 36 628 71 94 47 945 71 153 812 324 381 7 911 91 17 969 311 429 429 8659 517 7677 61 716 318 94 92 22 155 7159 9869 76 45 73 61 5851 93 286 11 79 22 71 7491 577 72 9 25 572 371 97 7991 699 19 248 862 26 263 62 273 43 31 983 92 36 1189 99 516 5325 932 92 453 1 889 88 2417 152 45 5619 857 18 47 95 22 5 385 66 53 58 823 891 475 33 639 269 82 64 53 71 2122 26 972 91 31 26 17 55 79 378 887 64 31 88 747 4 8 5498 148 3 6438 66 82 36 57 124 81 335 755 398 21 11 242 819 874 85 57 3 5872 3752 671 78 33 412 937 118 53 663 83 75 23 154 4965 18 964 92 17 93 95 44 52 625 7 439 33 47 468 3695 63 469 781 924 92 42 3829 98 22 22 76 99 28 644 442 913 526 42 33 871 334 34 312 63 92 5244 42 212 12 95 97 484 47 38 3932 177 44 957 251 64 225 134 858 623 8281 21 344 13 799 556 87 324 62 1889 696 121 1 33 3875 57 35 71 36 893 877 1987 8 85 658 61 92 391 974 177 66 939 2 339 22 993 62 1 522 829 69 39 682 3625 559 728 888 897 171 394 749 523 17 1972 3 774 482 46 354 15 29 57 7562 6852 1 8673 37 4 3 5 75 95 67 56 4 565 8 263 399 563 46 54 23 27 1 64 36 32 834 3 812 33 12 37 597 18 8 2 787 39 723 79 5 73 951 929 76 388 361 377 17 356 59 71 73 37 63 68 82 1 879 364 827 67 8 28 46 156 66 363 14 85 148 813 99 7272 38 91 2665 828 884 17 76 671 149 438 14 2288 45 67 87 334 85 529 48 595 4929 75 71 93 311 31 118 977 2754 49 6 37 422 848 5715 653 4638 228 463 87 71 65 688 182 32 64 56 414 463 98 182 21 67 1545 8 465 144 755 619 924 815 21 51 36 75 6371 79 22 74 177 65 87 51 749 68 28 26 6812 1 81 88 481 94 834 461 25 87 413 14 8829 972 437 786 451 348 617 3
|
||||||
|
4 83 8916 56 81 8 996 35 458 733 86 2 415 28 24 3 5349 661 254 26 719 222 971 46 3 22 93 1 959 56 9 671 152 449 3 917 22 1 63 962 48 329 28 4926 283 5562 3 287 2162 415 4 6662 56 94 89 9 628 37 239 453 573 3 53 3 2 63 43 61 692 86 5 95 46 882 5534 21 445 54 2 6 627 68 57 48 635 46 1 63 2 424 3 3544 62 54 966 498 426 17 7 79 99 553 58 9 9198 1 51 1734 917 37 18 48 45 53 83 56 555 89 86 73 89 117 56 993 551 53 4 7628 294 323 916 56 81 24 82 629 797 838 466 61 1343 59 754 248 227 72 46 7 38 11 29 38 81 59 7 76 75 353 23 94 859 672 1 4 54 62 692 9 22 9 59 1 64 21 38 88 427 44 2763 56 115 75 62 7872 69 249 963 488 6 79 52 9 49 5216 384 297 65 4455 577 639 2 69 4 465 282 62 77 575 497 3 84 77 1 6 68 726 16 6 93 3 8694 96 413 822 751 3 1526 14 3712 7 546 6 433 79 16 213 494 3 358 34 7274 97 8 66 94 63 848 14 2954 62 3 1944 59 77 2 3 45 7 545 64 625 815 41 17 8 213 38 1 142 15 27 9 1 84 483 8 8 188 7 55 4 7 568 8912 878 89 956 99 9 89 723 67 895 5 379 82 42 36 9 89 887 79 6 1 91 185 11 7641 32 678 63 2 684 442 92 45 1 94 11 56 187 97 93 87 6385 9 96 414 8825 5928 6 4 36 71 949 13 72 272 77 26 98 949 48 547 285 514 2847 782 75 974 4 411 4 68 39 977 526 59 63 49 1 54 548 44 7829 62 7781 25 35 89 28 862 729 84 37 825 11 9445 21 726 46 716 27 896 594 868 72 218 5575 62 6 561 17 32 23 58 9378 84 484 536 7 83 5 894 842 656 3 747 623 58 42 66 72 46 6 3 7 271 113 6235 8 85 9 94 46 12 61 32 864 67 7463 83 443 44 1962 2188 999 93 75 6 6 64 8 8 39 21 616 45 62 85 7 76 62 86 82 4176 58 12 5179 259 74 15 81 6 2 7 1 748 78 5 5 7 9 88 92 32 22 118 112 11 4562 83 93 867 491 93 3 5411 77 4 1 8815 311 21 675 86 639 876 6 18 2289 4264 34 68 292 314 81 57 137 45 8 257 9 795 912 48 42 7 76 2 69 56 969 7 5 43 971 99 8 9 79 69 96 22 947 9 32 9 89 62 286 49 51 38 15 5 4 779 18 5 941 41 8 9 75 2588 634 49 974 864 8 53 768 59 971 61 779 93 25 4 54 8 463 661 478 78 1535 888 22 74 741 978 25 76 14 485 1558 5576 53 18 4 12 3654 89 299 1 75 1 8 6 88 94 6 52 2482 625 67 2769 851 28 269 796 13 834 47 76 9 15 152 25 75 236 47 8 654 879 22 735 3 241 78 4296 11 69 815 961 88 92 35 8 8 83 9 9 97 682 813 659 89 645 61 18 9 17 32 8982 4 188 68 18 23 65 2 49 577 954 99 9 79 354 6 7 9 47 69 524 36 773 48 74 226 18 654 129 674 1 5 792 154 999 66 85 1 748 6156 332 9 77 96 85 7 77 866 13 6 92 822 3775 81 23 553 66 5 9 69 47 821 38 135 83 8 567 8944 6 2 642 653 11 89 4756 6 16 98 4 6 51 76 857 676 335 72 52 227 138 75 866 67 3 2793 29 7465 74 51 33 671 17 28 1325 124 32 816 146 62 177 336 45 999 9193 61 447 59 773 317 57 625 11 966 454 379 4 41 2327 19 48 11 35 474 91 8411 5 39 399 94 4 244 752 431 9 86 9 276 57 412 37 9 282 743 91 21 472 3428 213 71 427 486 527 468 215 374 9 8689 4 9998 99 61 196 34 68 66 4745 875 7 57 6 4 8 2 73 31 2 63 4 364 4 142 7 97 9 127 7 1 1 93 71 11 991 1 727 56 39 75 575 44 2 7 152 2 381 8 86 6 562 635 43 233 774 34 56 218 84 8 22 19 454 5 114 8 555 953 85 39 6 84 24 214 34 776 54 9 1 497 17 5523 82 25 1967 733 744 142 63 692 453 957 46 6245 48 47 52 568 29 243 42 424 566 57 3 18 892 67 317 799 4243 79 7 18 147 463 35 219 36 935 872 9 972 37 398 26 52 7 35 53 626 47 729 36 97 7226 7 2271 218 15 676 916 571 96 66 93 19 9819 582 49 9 627 24 7 684 854 9 42 97 8731 18 7 86 364 8 675 449 6 97 857 46 1899 766 16 925 627 416 931 74
|
||||||
|
* + + + * + + + * + + * * + * * + + * + * * * + * + * * * * + * * * + * + + * * + + * + * + * * + + * + * * * * + * * + * + * + + * + * * * + * * * + + + * * * * * * + + + + * + + * + + * + + * * * * + + * * + * * + + + * + + * * + * * * * * + * * + + * + + + * * + * * + * * + + + + + * * * * + * + * * * + + * * + + + * + + + * * * * + * * * * + * + + + + * + * * + * + * * + + * * + + * * * + * * * + + + * * + + + * * + + * * + * * * * + * + * * + + * + * + * * * * + + + * + + + * + + * * + + * + + * * * * + * + * + + + * + + * * + + + * + * + + + * * + * + + + * + * * * * + * * * * * + * + * + + * * + + + + + * * + * + * * + * * * + * + * + + + + + + * + + + * * + + + * * + * * * * + * + * * + * + * + + * + * * + + * + + + * * * * * + * * + * + * * + * * + + + * + + + * * * + * + + + * + + * * * * + + + * + + * * + * * * * * + * + + + + * * * + + + + + + + + * * + * + * + * * * + * + + * + + * + + * * + * + + * * * + + + + + + + * * * + + + + + + * + + + * + + * * * + * * + + * * + * + + * * * * * * + + * * + * * * * + + + * * + * * + * * + + + + + * * + * * * + + * + * * * * * * * * + + * + + + + + * * * * * * * + + + * + * * * + + + * + + + * + + * * + + * * * * + * + * + * + + + * + * + + * + * * + * + + + * * * + + * + * * + * + + * + + + * * + + + * + * * + * + + + * * * + + + * + + + * * + + + + + * * * * + + + * * + + * + * * * + * + + * + * * * + * + * * + + * + * * * + * * * * + + + + * * * * * + * + * * * * + + * * + * * + + * * * * * + + * * * + + * * * + + + + + + + + * * * * + + + + * + * * * * + * * * + + + * * + * + * * + + + + * * + + + + * + + * + * + + * + * * + + * + * * * + + + * * + + * + * + * + * * * + * + + + * + * + + * * * * * * + * * * + + * + * * * * + * + + * + + * + + * + * + * * + * + * + * * + * + * * * + * * * + * * + + * * * + + + * + * * + * + + + + * * + * * + + * * * + + + * + + * * * * * + * + * * * * + + + + * + + + * * * * + + * * * + + + + * + * + + * * * + * * + + + * * + * + * + * + + * + * * * * + + + * * + + * + * * * *
|
||||||
@@ -0,0 +1,165 @@
|
|||||||
|
namespace AOC.Tests.Y2025;
|
||||||
|
|
||||||
|
[TestFixture]
|
||||||
|
[Parallelizable(ParallelScope.All)]
|
||||||
|
public class Day01
|
||||||
|
{
|
||||||
|
[SetUp]
|
||||||
|
public void Setup()
|
||||||
|
{
|
||||||
|
realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2025", "Data",
|
||||||
|
$"{GetThisClassName()}.dat"));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected string GetThisClassName() { return GetType().Name; }
|
||||||
|
private string[] realData;
|
||||||
|
|
||||||
|
private int TurnDial(int startNumber, char direction, int clicks)
|
||||||
|
{
|
||||||
|
int delta = direction switch
|
||||||
|
{
|
||||||
|
'R' => clicks,
|
||||||
|
'L' => -clicks,
|
||||||
|
_ => throw new ArgumentOutOfRangeException(nameof(direction), direction, null)
|
||||||
|
};
|
||||||
|
|
||||||
|
int finalNumber = (startNumber + delta) % 100;
|
||||||
|
if (finalNumber < 0)
|
||||||
|
{
|
||||||
|
finalNumber += 100;
|
||||||
|
}
|
||||||
|
|
||||||
|
return finalNumber;
|
||||||
|
}
|
||||||
|
|
||||||
|
private int CountZeroHits(int startNumber, char direction, int clicks)
|
||||||
|
{
|
||||||
|
if (clicks <= 0)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int firstHit;
|
||||||
|
|
||||||
|
if (direction == 'R')
|
||||||
|
{
|
||||||
|
// Position after k clicks: (startNumber + k) mod 100 == 0
|
||||||
|
// => k ≡ -startNumber ≡ 100 - startNumber (mod 100)
|
||||||
|
firstHit = (100 - startNumber) % 100;
|
||||||
|
if (firstHit == 0)
|
||||||
|
{
|
||||||
|
firstHit = 100; // don't count "k = 0", we only care about actual clicks
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else if (direction == 'L')
|
||||||
|
{
|
||||||
|
// Position after k clicks: (startNumber - k) mod 100 == 0
|
||||||
|
// => k ≡ startNumber (mod 100)
|
||||||
|
firstHit = startNumber % 100;
|
||||||
|
if (firstHit == 0)
|
||||||
|
{
|
||||||
|
firstHit = 100;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
throw new ArgumentOutOfRangeException(nameof(direction), direction, null);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (firstHit > clicks)
|
||||||
|
{
|
||||||
|
return 0; // we never reach 0 within this rotation
|
||||||
|
}
|
||||||
|
|
||||||
|
// After the first hit, every extra 100 clicks we hit 0 again
|
||||||
|
int remaining = clicks - firstHit;
|
||||||
|
return 1 + remaining / 100;
|
||||||
|
}
|
||||||
|
|
||||||
|
private int HandleRotations(string[] lines, bool isPart2 = false)
|
||||||
|
{
|
||||||
|
int startNumber = 50;
|
||||||
|
int zerosCount = 0;
|
||||||
|
|
||||||
|
foreach (string line in lines)
|
||||||
|
{
|
||||||
|
// L or R, then a number to EOL
|
||||||
|
char direction = line[0];
|
||||||
|
int clicks = int.Parse(line.Substring(1));
|
||||||
|
|
||||||
|
// The dial is a circle, turning the dial left from 0 one click makes it point at 99.
|
||||||
|
// Similarly, turning the dial right from 99 one click makes it point at 0.
|
||||||
|
|
||||||
|
if (isPart2)
|
||||||
|
{
|
||||||
|
// Count every click that lands on 0 (during + at end of rotation).
|
||||||
|
zerosCount += CountZeroHits(startNumber, direction, clicks);
|
||||||
|
}
|
||||||
|
|
||||||
|
// For the final dial position ignore full rotations.
|
||||||
|
int clicksLessFullRotations = clicks % 100;
|
||||||
|
int finalNumber = TurnDial(startNumber, direction, clicksLessFullRotations);
|
||||||
|
|
||||||
|
if (!isPart2 && finalNumber == 0)
|
||||||
|
{
|
||||||
|
zerosCount++;
|
||||||
|
}
|
||||||
|
|
||||||
|
startNumber = finalNumber;
|
||||||
|
}
|
||||||
|
|
||||||
|
return zerosCount;
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"L68
|
||||||
|
L30
|
||||||
|
R48
|
||||||
|
L5
|
||||||
|
R60
|
||||||
|
L55
|
||||||
|
L1
|
||||||
|
L99
|
||||||
|
R14
|
||||||
|
L82", 3)]
|
||||||
|
[TestCase(null, 1066)] // The actual answer
|
||||||
|
public void Part1(string? input, int? expected)
|
||||||
|
{
|
||||||
|
// string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
int result = HandleRotations(lines);
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 1: {result}");
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"L68
|
||||||
|
L30
|
||||||
|
R48
|
||||||
|
L5
|
||||||
|
R60
|
||||||
|
L55
|
||||||
|
L1
|
||||||
|
L99
|
||||||
|
R14
|
||||||
|
L82", 6)]
|
||||||
|
[TestCase(null, 6223)] // The actual answer
|
||||||
|
public void Part2(string? input, int? expected)
|
||||||
|
{
|
||||||
|
// string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
int result = HandleRotations(lines, true);
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 2: {result}");
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,161 @@
|
|||||||
|
using System.Text;
|
||||||
|
|
||||||
|
namespace AOC.Tests.Y2025;
|
||||||
|
|
||||||
|
[TestFixture]
|
||||||
|
[Parallelizable(ParallelScope.All)]
|
||||||
|
public class Day02
|
||||||
|
{
|
||||||
|
[SetUp]
|
||||||
|
public void Setup()
|
||||||
|
{
|
||||||
|
realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2025", "Data",
|
||||||
|
$"{GetThisClassName()}.dat"));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected string GetThisClassName() { return GetType().Name; }
|
||||||
|
private string[] realData;
|
||||||
|
|
||||||
|
private List<long> FindInvalidIds(long firstId, long lastId)
|
||||||
|
{
|
||||||
|
List<long> invalidIds = new();
|
||||||
|
// Since the young Elf was just doing silly patterns, you can find the invalid IDs by looking for any ID which is
|
||||||
|
// made only of some sequence of digits repeated twice. So, 55 (5 twice), 6464 (64 twice), and 123123 (123 twice)
|
||||||
|
// would all be invalid IDs.
|
||||||
|
// None of the numbers have leading zeroes; 0101 isn't an ID at all. (101 is a valid ID that you would ignore.)
|
||||||
|
|
||||||
|
for (long i = firstId; i <= lastId; i++)
|
||||||
|
{
|
||||||
|
string numberString = i.ToString();
|
||||||
|
|
||||||
|
// split the string in the middle, and if the two halves are identical then add i to invalidIds
|
||||||
|
int middlePosition = numberString.Length / 2;
|
||||||
|
string leftString = numberString.Substring(0, middlePosition);
|
||||||
|
string rightString = numberString.Substring(middlePosition);
|
||||||
|
|
||||||
|
if (leftString == rightString)
|
||||||
|
{
|
||||||
|
invalidIds.Add(i);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return invalidIds;
|
||||||
|
}
|
||||||
|
|
||||||
|
private static long FindRepeatingPattern(string numberString)
|
||||||
|
{
|
||||||
|
int digitsCount = numberString.Length;
|
||||||
|
|
||||||
|
for (int k = 1; k <= digitsCount / 2; k++)
|
||||||
|
{
|
||||||
|
if (digitsCount % k != 0)
|
||||||
|
{
|
||||||
|
continue; // can't evenly repeat so escape early
|
||||||
|
}
|
||||||
|
|
||||||
|
string pattern = numberString.Substring(0, k);
|
||||||
|
long times = digitsCount / k;
|
||||||
|
|
||||||
|
StringBuilder repeated = new(digitsCount);
|
||||||
|
for (long i = 0; i < times; i++)
|
||||||
|
{
|
||||||
|
repeated.Append(pattern);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (repeated.ToString() == numberString)
|
||||||
|
{
|
||||||
|
return times;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// No repeating pattern found
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
private List<long> FindInvalidIdsPart2(long firstId, long lastId)
|
||||||
|
{
|
||||||
|
List<long> invalidIds = new();
|
||||||
|
|
||||||
|
// Now, an ID is invalid if it is made only of some sequence of digits repeated at least twice. So, 12341234 (1234 two times),
|
||||||
|
// 123123123 (123 three times), 1212121212 (12 five times), and 1111111 (1 seven times) are all invalid IDs.
|
||||||
|
|
||||||
|
for (long i = firstId; i <= lastId; i++)
|
||||||
|
{
|
||||||
|
string numberString = i.ToString();
|
||||||
|
long count = FindRepeatingPattern(numberString);
|
||||||
|
|
||||||
|
if (count > 1)
|
||||||
|
{
|
||||||
|
invalidIds.Add(i);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return invalidIds;
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(
|
||||||
|
"11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124",
|
||||||
|
1227775554)]
|
||||||
|
[TestCase(null, 23534117921)] // The actual answer
|
||||||
|
public void Part1(string? input, long? expected)
|
||||||
|
{
|
||||||
|
string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
// string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<long> invalidIds = new();
|
||||||
|
|
||||||
|
// Split by comma to get each range
|
||||||
|
string[] ranges = lines[0].Split(',');
|
||||||
|
foreach (string range in ranges)
|
||||||
|
{
|
||||||
|
// Split by - to get the first and last ID in the range
|
||||||
|
long firstId = long.Parse(range.Split('-')[0]);
|
||||||
|
long lastId = long.Parse(range.Split('-')[1]);
|
||||||
|
|
||||||
|
List<long> invalidIdsInRange = FindInvalidIds(firstId, lastId);
|
||||||
|
invalidIds.AddRange(invalidIdsInRange);
|
||||||
|
}
|
||||||
|
|
||||||
|
long result = invalidIds.Sum();
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 1: {result}");
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(
|
||||||
|
"11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124",
|
||||||
|
(long)4174379265)]
|
||||||
|
[TestCase(null, 31755323497)] // The actual answer
|
||||||
|
public void Part2(string? input, long? expected)
|
||||||
|
{
|
||||||
|
string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
// string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<long> invalidIds = new();
|
||||||
|
|
||||||
|
// Split by comma to get each range
|
||||||
|
string[] ranges = lines[0].Split(',');
|
||||||
|
foreach (string range in ranges)
|
||||||
|
{
|
||||||
|
// Split by - to get the first and last ID in the range
|
||||||
|
long firstId = long.Parse(range.Split('-')[0]);
|
||||||
|
long lastId = long.Parse(range.Split('-')[1]);
|
||||||
|
|
||||||
|
List<long> invalidIdsInRange = FindInvalidIdsPart2(firstId, lastId);
|
||||||
|
invalidIds.AddRange(invalidIdsInRange);
|
||||||
|
}
|
||||||
|
|
||||||
|
long result = invalidIds.Sum();
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 2: {result}");
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,111 @@
|
|||||||
|
using System.Text;
|
||||||
|
|
||||||
|
namespace AOC.Tests.Y2025;
|
||||||
|
|
||||||
|
[TestFixture]
|
||||||
|
[Parallelizable(ParallelScope.All)]
|
||||||
|
public class Day03
|
||||||
|
{
|
||||||
|
[SetUp]
|
||||||
|
public void Setup()
|
||||||
|
{
|
||||||
|
realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2025", "Data",
|
||||||
|
$"{GetThisClassName()}.dat"));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected string GetThisClassName() { return GetType().Name; }
|
||||||
|
private string[] realData;
|
||||||
|
|
||||||
|
[TestCase(@"987654321111111
|
||||||
|
811111111111119
|
||||||
|
234234234234278
|
||||||
|
818181911112111", 357)]
|
||||||
|
[TestCase(null, 17383)] // The actual answer
|
||||||
|
public void Part1(string? input, int? expected)
|
||||||
|
{
|
||||||
|
// string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<long> maxJoltages = new();
|
||||||
|
|
||||||
|
foreach (string line in lines)
|
||||||
|
{
|
||||||
|
int[] digits = line
|
||||||
|
.Select(c => (int)char.GetNumericValue(c))
|
||||||
|
.ToArray();
|
||||||
|
|
||||||
|
// Find the biggest number in the digits array (excluding the last digit), and its position
|
||||||
|
int biggestDigit = digits[..^1].Max();
|
||||||
|
int biggestDigitPosition = Array.IndexOf(digits, biggestDigit);
|
||||||
|
|
||||||
|
// Ignore any digits before and including the biggest digit, then find the next biggest
|
||||||
|
digits = digits.Skip(biggestDigitPosition + 1).ToArray();
|
||||||
|
int nextBiggestDigit = digits.Max();
|
||||||
|
|
||||||
|
int maxJoltage = biggestDigit * 10 + nextBiggestDigit;
|
||||||
|
maxJoltages.Add(maxJoltage);
|
||||||
|
}
|
||||||
|
|
||||||
|
long result = maxJoltages.Sum();
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 1: {result}");
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"987654321111111
|
||||||
|
811111111111119
|
||||||
|
234234234234278
|
||||||
|
818181911112111", 3121910778619)]
|
||||||
|
[TestCase(null, 172601598658203)] // The actual answer
|
||||||
|
public void Part2(string? input, long? expected)
|
||||||
|
{
|
||||||
|
//string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<long> maxJoltages = new();
|
||||||
|
|
||||||
|
foreach (string line in lines)
|
||||||
|
{
|
||||||
|
int[] digits = line
|
||||||
|
.Select(c => (int)char.GetNumericValue(c))
|
||||||
|
.ToArray();
|
||||||
|
|
||||||
|
List<int> biggestDigits = new();
|
||||||
|
|
||||||
|
// Get the 12 biggest digits
|
||||||
|
for (int i = 0; i < 12; i++)
|
||||||
|
{
|
||||||
|
// Find the biggest number in the digits array (excluding the remaining 11-0 digits), and its position
|
||||||
|
int biggestDigit = digits[..^(11 - i)].Max();
|
||||||
|
int biggestDigitPosition = Array.IndexOf(digits, biggestDigit);
|
||||||
|
|
||||||
|
// Ignore any digits before and including the biggest digit, then find the next biggest
|
||||||
|
digits = digits.Skip(biggestDigitPosition + 1).ToArray();
|
||||||
|
|
||||||
|
biggestDigits.Add(biggestDigit);
|
||||||
|
}
|
||||||
|
|
||||||
|
StringBuilder sb = new();
|
||||||
|
foreach (int digit in biggestDigits)
|
||||||
|
{
|
||||||
|
sb.Append(digit);
|
||||||
|
}
|
||||||
|
|
||||||
|
long maxJoltage = long.Parse(sb.ToString());
|
||||||
|
maxJoltages.Add(maxJoltage);
|
||||||
|
}
|
||||||
|
|
||||||
|
long result = maxJoltages.Sum();
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 2: {result}");
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,134 @@
|
|||||||
|
using AOC.Helpers;
|
||||||
|
|
||||||
|
namespace AOC.Tests.Y2025;
|
||||||
|
|
||||||
|
[TestFixture]
|
||||||
|
[Parallelizable(ParallelScope.All)]
|
||||||
|
public class Day04
|
||||||
|
{
|
||||||
|
[SetUp]
|
||||||
|
public void Setup()
|
||||||
|
{
|
||||||
|
realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2025", "Data",
|
||||||
|
$"{GetThisClassName()}.dat"));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected string GetThisClassName() { return GetType().Name; }
|
||||||
|
private string[] realData;
|
||||||
|
|
||||||
|
[TestCase(@"..@@.@@@@.
|
||||||
|
@@@.@.@.@@
|
||||||
|
@@@@@.@.@@
|
||||||
|
@.@@@@..@.
|
||||||
|
@@.@@@@.@@
|
||||||
|
.@@@@@@@.@
|
||||||
|
.@.@.@.@@@
|
||||||
|
@.@@@.@@@@
|
||||||
|
.@@@@@@@@.
|
||||||
|
@.@.@@@.@.", 13)]
|
||||||
|
[TestCase(null, 1451)] // The actual answer
|
||||||
|
public void Part1(string? input, int? expected)
|
||||||
|
{
|
||||||
|
// string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
char[,] array = TwoDimensionalArrays.Make2DArrayFromStringArray(lines);
|
||||||
|
|
||||||
|
int rollsOfPaperThatCanBeAccessed = 0;
|
||||||
|
|
||||||
|
foreach ((int row, int column, char value) in TwoDimensionalArrays.Cells(array))
|
||||||
|
{
|
||||||
|
if (value != '@')
|
||||||
|
{
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
List<(int, int)> positionsWherePaperExists =
|
||||||
|
TwoDimensionalArrays.CheckAllSurroundingCellsForCharacter(array, row, column, '@');
|
||||||
|
|
||||||
|
if (positionsWherePaperExists.Count < 4)
|
||||||
|
{
|
||||||
|
rollsOfPaperThatCanBeAccessed++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int result = rollsOfPaperThatCanBeAccessed;
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 1: {result}");
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"..@@.@@@@.
|
||||||
|
@@@.@.@.@@
|
||||||
|
@@@@@.@.@@
|
||||||
|
@.@@@@..@.
|
||||||
|
@@.@@@@.@@
|
||||||
|
.@@@@@@@.@
|
||||||
|
.@.@.@.@@@
|
||||||
|
@.@@@.@@@@
|
||||||
|
.@@@@@@@@.
|
||||||
|
@.@.@@@.@.", 43)]
|
||||||
|
[TestCase(null, 8701)] // The actual answer
|
||||||
|
public void Part2(string? input, int? expected)
|
||||||
|
{
|
||||||
|
//string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
char[,] array = TwoDimensionalArrays.Make2DArrayFromStringArray(lines);
|
||||||
|
|
||||||
|
int totalRollsOfPaperRemoved = 0;
|
||||||
|
int rollsOfPaperAccessed = 0;
|
||||||
|
|
||||||
|
bool continueLoop = true;
|
||||||
|
|
||||||
|
while (continueLoop)
|
||||||
|
{
|
||||||
|
List<(int, int)> positionsToRemovePaper = new();
|
||||||
|
foreach ((int row, int column, char value) in TwoDimensionalArrays.Cells(array))
|
||||||
|
{
|
||||||
|
if (value != '@')
|
||||||
|
{
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
List<(int, int)> positionsWherePaperExists =
|
||||||
|
TwoDimensionalArrays.CheckAllSurroundingCellsForCharacter(array, row, column, '@');
|
||||||
|
|
||||||
|
if (positionsWherePaperExists.Count < 4)
|
||||||
|
{
|
||||||
|
totalRollsOfPaperRemoved++;
|
||||||
|
rollsOfPaperAccessed++;
|
||||||
|
positionsToRemovePaper.Add((row, column));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (rollsOfPaperAccessed == 0)
|
||||||
|
{
|
||||||
|
continueLoop = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
rollsOfPaperAccessed = 0;
|
||||||
|
|
||||||
|
// Remove each roll
|
||||||
|
foreach ((int, int) position in positionsToRemovePaper)
|
||||||
|
{
|
||||||
|
array[position.Item1, position.Item2] = 'x';
|
||||||
|
}
|
||||||
|
|
||||||
|
positionsToRemovePaper.Clear();
|
||||||
|
}
|
||||||
|
|
||||||
|
int result = totalRollsOfPaperRemoved;
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 2: {result}");
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,149 @@
|
|||||||
|
namespace AOC.Tests.Y2025;
|
||||||
|
|
||||||
|
[TestFixture]
|
||||||
|
[Parallelizable(ParallelScope.All)]
|
||||||
|
public class Day05
|
||||||
|
{
|
||||||
|
[SetUp]
|
||||||
|
public void Setup()
|
||||||
|
{
|
||||||
|
realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2025", "Data",
|
||||||
|
$"{GetThisClassName()}.dat"));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected string GetThisClassName() { return GetType().Name; }
|
||||||
|
private string[] realData;
|
||||||
|
|
||||||
|
[TestCase(@"3-5
|
||||||
|
10-14
|
||||||
|
16-20
|
||||||
|
12-18
|
||||||
|
|
||||||
|
1
|
||||||
|
5
|
||||||
|
8
|
||||||
|
11
|
||||||
|
17
|
||||||
|
32", (long)3)]
|
||||||
|
[TestCase(null, (long)513)] // The actual answer
|
||||||
|
public void Part1(string? input, long? expected)
|
||||||
|
{
|
||||||
|
// string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
bool isListOfValidIngredients = true;
|
||||||
|
|
||||||
|
List<(long Start, long End)> validRanges = new();
|
||||||
|
List<long> availableIngredients = new();
|
||||||
|
|
||||||
|
foreach (string line in lines)
|
||||||
|
{
|
||||||
|
if (string.IsNullOrEmpty(line))
|
||||||
|
{
|
||||||
|
isListOfValidIngredients = false;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (isListOfValidIngredients)
|
||||||
|
{
|
||||||
|
string[] rangeNumbers = line.Split('-', 2);
|
||||||
|
long startNumber = long.Parse(rangeNumbers[0]);
|
||||||
|
long endNumber = long.Parse(rangeNumbers[1]);
|
||||||
|
|
||||||
|
validRanges.Add((startNumber, endNumber));
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
availableIngredients.Add(long.Parse(line));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// For each available ingredient, check if it falls in any valid range
|
||||||
|
long result = availableIngredients.Count(value =>
|
||||||
|
validRanges.Any(r => value >= r.Start && value <= r.End));
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 1: {result}");
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"3-5
|
||||||
|
10-14
|
||||||
|
16-20
|
||||||
|
12-18
|
||||||
|
|
||||||
|
1
|
||||||
|
5
|
||||||
|
8
|
||||||
|
11
|
||||||
|
17
|
||||||
|
32", (long)14)]
|
||||||
|
[TestCase(null, (long)1783)] // The actual answer
|
||||||
|
public void Part2(string? input, long? expected)
|
||||||
|
{
|
||||||
|
//string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<(long Start, long End)> validRanges = new();
|
||||||
|
|
||||||
|
foreach (string line in lines)
|
||||||
|
{
|
||||||
|
if (string.IsNullOrEmpty(line))
|
||||||
|
{
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
string[] rangeNumbers = line.Split('-', 2);
|
||||||
|
long startNumber = long.Parse(rangeNumbers[0]);
|
||||||
|
long endNumber = long.Parse(rangeNumbers[1]);
|
||||||
|
|
||||||
|
validRanges.Add((startNumber, endNumber));
|
||||||
|
}
|
||||||
|
|
||||||
|
// Sort ranges by Start then End
|
||||||
|
validRanges.Sort((a, b) =>
|
||||||
|
{
|
||||||
|
int cmp = a.Start.CompareTo(b.Start);
|
||||||
|
return cmp != 0 ? cmp : a.End.CompareTo(b.End);
|
||||||
|
});
|
||||||
|
|
||||||
|
// Merge overlapping or adjacent ranges
|
||||||
|
List<(long Start, long End)> merged = new();
|
||||||
|
(long Start, long End) current = validRanges[0];
|
||||||
|
|
||||||
|
for (int i = 1; i < validRanges.Count; i++)
|
||||||
|
{
|
||||||
|
(long Start, long End) next = validRanges[i];
|
||||||
|
|
||||||
|
// overlapping or touching?
|
||||||
|
if (next.Start <= current.End + 1)
|
||||||
|
{
|
||||||
|
current = (current.Start, Math.Max(current.End, next.End));
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
merged.Add(current);
|
||||||
|
current = next;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
merged.Add(current);
|
||||||
|
|
||||||
|
long result = 0;
|
||||||
|
foreach ((long start, long end) in merged)
|
||||||
|
{
|
||||||
|
// +1 because both ends are inclusive
|
||||||
|
result += end - start + 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 2: {result}");
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,253 @@
|
|||||||
|
using System.Diagnostics;
|
||||||
|
|
||||||
|
namespace AOC.Tests.Y2025;
|
||||||
|
|
||||||
|
[TestFixture]
|
||||||
|
[Parallelizable(ParallelScope.All)]
|
||||||
|
public class Day06
|
||||||
|
{
|
||||||
|
[SetUp]
|
||||||
|
public void Setup()
|
||||||
|
{
|
||||||
|
realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2025", "Data",
|
||||||
|
$"{GetThisClassName()}.dat"));
|
||||||
|
}
|
||||||
|
|
||||||
|
protected string GetThisClassName() { return GetType().Name; }
|
||||||
|
private string[] realData;
|
||||||
|
|
||||||
|
internal record Calculation(IReadOnlyList<long> Numbers, char Operation);
|
||||||
|
|
||||||
|
private List<Calculation> GetCalculations(string[] lines)
|
||||||
|
{
|
||||||
|
int numberRowCount = lines.Length - 1;
|
||||||
|
List<string[]> numberRows = new(numberRowCount);
|
||||||
|
|
||||||
|
// Split the number rows
|
||||||
|
for (int row = 0; row < numberRowCount; row++)
|
||||||
|
{
|
||||||
|
string[] parts = lines[row].Split(' ', StringSplitOptions.RemoveEmptyEntries);
|
||||||
|
numberRows.Add(parts);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Split the operations row (last line)
|
||||||
|
string[] operations = lines[^1].Split(' ', StringSplitOptions.RemoveEmptyEntries);
|
||||||
|
|
||||||
|
int columnCount = numberRows[0].Length;
|
||||||
|
|
||||||
|
List<Calculation> calculations = new(columnCount);
|
||||||
|
|
||||||
|
for (int col = 0; col < columnCount; col++)
|
||||||
|
{
|
||||||
|
long[] numbers = new long[numberRowCount];
|
||||||
|
|
||||||
|
for (int row = 0; row < numberRowCount; row++)
|
||||||
|
{
|
||||||
|
numbers[row] = long.Parse(numberRows[row][col]);
|
||||||
|
}
|
||||||
|
|
||||||
|
char op = operations[col][0];
|
||||||
|
|
||||||
|
calculations.Add(new Calculation(numbers, op));
|
||||||
|
}
|
||||||
|
|
||||||
|
return calculations;
|
||||||
|
}
|
||||||
|
|
||||||
|
private List<Calculation> GetCalculationsVertically(string[] lines)
|
||||||
|
{
|
||||||
|
int rows = lines.Length;
|
||||||
|
if (rows == 0)
|
||||||
|
{
|
||||||
|
return new List<Calculation>();
|
||||||
|
}
|
||||||
|
|
||||||
|
// Make all lines the same width so indexing is safe
|
||||||
|
int columns = lines.Max(l => l.Length);
|
||||||
|
string[] grid = lines
|
||||||
|
.Select(l => l.PadRight(columns, ' '))
|
||||||
|
.ToArray();
|
||||||
|
|
||||||
|
int operatorRow = rows - 1;
|
||||||
|
|
||||||
|
List<Calculation> calculations = new();
|
||||||
|
|
||||||
|
int col = 0;
|
||||||
|
while (col < columns)
|
||||||
|
{
|
||||||
|
// Is this a separator column? (all spaces)
|
||||||
|
bool isSeparator = true;
|
||||||
|
for (int r = 0; r < rows; r++)
|
||||||
|
{
|
||||||
|
if (grid[r][col] != ' ')
|
||||||
|
{
|
||||||
|
isSeparator = false;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (isSeparator)
|
||||||
|
{
|
||||||
|
col++;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
int startCol = col;
|
||||||
|
col++;
|
||||||
|
|
||||||
|
while (col < columns)
|
||||||
|
{
|
||||||
|
bool sep = true;
|
||||||
|
for (int r = 0; r < rows; r++)
|
||||||
|
{
|
||||||
|
if (grid[r][col] != ' ')
|
||||||
|
{
|
||||||
|
sep = false;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (sep)
|
||||||
|
{
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
col++;
|
||||||
|
}
|
||||||
|
|
||||||
|
int endCol = col - 1;
|
||||||
|
|
||||||
|
// Operator is at the bottom of the leftmost column
|
||||||
|
char op = grid[operatorRow][startCol];
|
||||||
|
List<long> numbers = new();
|
||||||
|
|
||||||
|
// Read numbers right-to-left within the problem (endCol to startCol)
|
||||||
|
for (int c = endCol; c >= startCol; c--)
|
||||||
|
{
|
||||||
|
List<char> digits = new();
|
||||||
|
|
||||||
|
// Digits are from all rows above the operator row
|
||||||
|
for (int r = 0; r < operatorRow; r++)
|
||||||
|
{
|
||||||
|
char ch = grid[r][c];
|
||||||
|
if (char.IsDigit(ch))
|
||||||
|
{
|
||||||
|
digits.Add(ch);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
long value = long.Parse(new string(digits.ToArray()));
|
||||||
|
numbers.Add(value);
|
||||||
|
}
|
||||||
|
|
||||||
|
calculations.Add(new Calculation(numbers, op));
|
||||||
|
}
|
||||||
|
|
||||||
|
return calculations;
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"123 328 51 64
|
||||||
|
45 64 387 23
|
||||||
|
6 98 215 314
|
||||||
|
* + * + ", (long)4277556)]
|
||||||
|
[TestCase(null, 5667835681547)] // The actual answer
|
||||||
|
public void Part1(string? input, long? expected)
|
||||||
|
{
|
||||||
|
// string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<Calculation> calculations = GetCalculations(lines);
|
||||||
|
|
||||||
|
long runningTotal = 0;
|
||||||
|
|
||||||
|
foreach (Calculation c in calculations)
|
||||||
|
{
|
||||||
|
long answer = 0;
|
||||||
|
|
||||||
|
switch (c.Operation)
|
||||||
|
{
|
||||||
|
case '+':
|
||||||
|
answer = 0;
|
||||||
|
foreach (long n in c.Numbers)
|
||||||
|
{
|
||||||
|
answer += n;
|
||||||
|
}
|
||||||
|
|
||||||
|
break;
|
||||||
|
|
||||||
|
case '*':
|
||||||
|
answer = 1;
|
||||||
|
foreach (long n in c.Numbers)
|
||||||
|
{
|
||||||
|
answer *= n;
|
||||||
|
}
|
||||||
|
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
runningTotal += answer;
|
||||||
|
}
|
||||||
|
|
||||||
|
long result = runningTotal;
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 1: {result}");
|
||||||
|
}
|
||||||
|
|
||||||
|
[TestCase(@"123 328 51 64
|
||||||
|
45 64 387 23
|
||||||
|
6 98 215 314
|
||||||
|
* + * + ", (long)3263827)]
|
||||||
|
[TestCase(null, 9434900032651)] // The actual answer
|
||||||
|
public void Part2(string? input, long? expected)
|
||||||
|
{
|
||||||
|
//string[] lines = input != null ? new[] { input } : realData;
|
||||||
|
string[] lines = input != null ? input.Split("\n") : realData;
|
||||||
|
|
||||||
|
List<Calculation> calculations = GetCalculationsVertically(lines);
|
||||||
|
|
||||||
|
long runningTotal = 0;
|
||||||
|
|
||||||
|
foreach (Calculation c in calculations)
|
||||||
|
{
|
||||||
|
long answer = 0;
|
||||||
|
|
||||||
|
switch (c.Operation)
|
||||||
|
{
|
||||||
|
case '+':
|
||||||
|
answer = 0;
|
||||||
|
foreach (long n in c.Numbers)
|
||||||
|
{
|
||||||
|
answer += n;
|
||||||
|
}
|
||||||
|
|
||||||
|
break;
|
||||||
|
|
||||||
|
case '*':
|
||||||
|
answer = 1;
|
||||||
|
foreach (long n in c.Numbers)
|
||||||
|
{
|
||||||
|
answer *= n;
|
||||||
|
}
|
||||||
|
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
runningTotal += answer;
|
||||||
|
Debug.WriteLine($"{c.Numbers} {c.Operation} {answer}");
|
||||||
|
}
|
||||||
|
|
||||||
|
long result = runningTotal;
|
||||||
|
|
||||||
|
if (expected != null)
|
||||||
|
{
|
||||||
|
Assert.That(result, Is.EqualTo(expected.Value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine($"Part 2: {result}");
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -0,0 +1,85 @@
|
|||||||
|
--- Day 1: Secret Entrance ---
|
||||||
|
The Elves have good news and bad news.
|
||||||
|
|
||||||
|
The good news is that they've discovered project management! This has given them the tools they need to prevent their usual Christmas emergency. For example, they now know that the North Pole decorations need to be finished soon so that other critical tasks can start on time.
|
||||||
|
|
||||||
|
The bad news is that they've realized they have a different emergency: according to their resource planning, none of them have any time left to decorate the North Pole!
|
||||||
|
|
||||||
|
To save Christmas, the Elves need you to finish decorating the North Pole by December 12th.
|
||||||
|
|
||||||
|
Collect stars by solving puzzles. Two puzzles will be made available on each day; the second puzzle is unlocked when you complete the first. Each puzzle grants one star. Good luck!
|
||||||
|
|
||||||
|
You arrive at the secret entrance to the North Pole base ready to start decorating. Unfortunately, the password seems to have been changed, so you can't get in. A document taped to the wall helpfully explains:
|
||||||
|
|
||||||
|
"Due to new security protocols, the password is locked in the safe below. Please see the attached document for the new combination."
|
||||||
|
|
||||||
|
The safe has a dial with only an arrow on it; around the dial are the numbers 0 through 99 in order. As you turn the dial, it makes a small click noise as it reaches each number.
|
||||||
|
|
||||||
|
The attached document (your puzzle input) contains a sequence of rotations, one per line, which tell you how to open the safe. A rotation starts with an L or R which indicates whether the rotation should be to the left (toward lower numbers) or to the right (toward higher numbers). Then, the rotation has a distance value which indicates how many clicks the dial should be rotated in that direction.
|
||||||
|
|
||||||
|
So, if the dial were pointing at 11, a rotation of R8 would cause the dial to point at 19. After that, a rotation of L19 would cause it to point at 0.
|
||||||
|
|
||||||
|
Because the dial is a circle, turning the dial left from 0 one click makes it point at 99. Similarly, turning the dial right from 99 one click makes it point at 0.
|
||||||
|
|
||||||
|
So, if the dial were pointing at 5, a rotation of L10 would cause it to point at 95. After that, a rotation of R5 could cause it to point at 0.
|
||||||
|
|
||||||
|
The dial starts by pointing at 50.
|
||||||
|
|
||||||
|
You could follow the instructions, but your recent required official North Pole secret entrance security training seminar taught you that the safe is actually a decoy. The actual password is the number of times the dial is left pointing at 0 after any rotation in the sequence.
|
||||||
|
|
||||||
|
For example, suppose the attached document contained the following rotations:
|
||||||
|
|
||||||
|
L68
|
||||||
|
L30
|
||||||
|
R48
|
||||||
|
L5
|
||||||
|
R60
|
||||||
|
L55
|
||||||
|
L1
|
||||||
|
L99
|
||||||
|
R14
|
||||||
|
L82
|
||||||
|
Following these rotations would cause the dial to move as follows:
|
||||||
|
|
||||||
|
The dial starts by pointing at 50.
|
||||||
|
The dial is rotated L68 to point at 82.
|
||||||
|
The dial is rotated L30 to point at 52.
|
||||||
|
The dial is rotated R48 to point at 0.
|
||||||
|
The dial is rotated L5 to point at 95.
|
||||||
|
The dial is rotated R60 to point at 55.
|
||||||
|
The dial is rotated L55 to point at 0.
|
||||||
|
The dial is rotated L1 to point at 99.
|
||||||
|
The dial is rotated L99 to point at 0.
|
||||||
|
The dial is rotated R14 to point at 14.
|
||||||
|
The dial is rotated L82 to point at 32.
|
||||||
|
Because the dial points at 0 a total of three times during this process, the password in this example is 3.
|
||||||
|
|
||||||
|
Analyze the rotations in your attached document. What's the actual password to open the door?
|
||||||
|
|
||||||
|
--- Part Two ---
|
||||||
|
You're sure that's the right password, but the door won't open. You knock, but nobody answers. You build a snowman while you think.
|
||||||
|
|
||||||
|
As you're rolling the snowballs for your snowman, you find another security document that must have fallen into the snow:
|
||||||
|
|
||||||
|
"Due to newer security protocols, please use password method 0x434C49434B until further notice."
|
||||||
|
|
||||||
|
You remember from the training seminar that "method 0x434C49434B" means you're actually supposed to count the number of times any click causes the dial to point at 0, regardless of whether it happens during a rotation or at the end of one.
|
||||||
|
|
||||||
|
Following the same rotations as in the above example, the dial points at zero a few extra times during its rotations:
|
||||||
|
|
||||||
|
The dial starts by pointing at 50.
|
||||||
|
The dial is rotated L68 to point at 82; during this rotation, it points at 0 once.
|
||||||
|
The dial is rotated L30 to point at 52.
|
||||||
|
The dial is rotated R48 to point at 0.
|
||||||
|
The dial is rotated L5 to point at 95.
|
||||||
|
The dial is rotated R60 to point at 55; during this rotation, it points at 0 once.
|
||||||
|
The dial is rotated L55 to point at 0.
|
||||||
|
The dial is rotated L1 to point at 99.
|
||||||
|
The dial is rotated L99 to point at 0.
|
||||||
|
The dial is rotated R14 to point at 14.
|
||||||
|
The dial is rotated L82 to point at 32; during this rotation, it points at 0 once.
|
||||||
|
In this example, the dial points at 0 three times at the end of a rotation, plus three more times during a rotation. So, in this example, the new password would be 6.
|
||||||
|
|
||||||
|
Be careful: if the dial were pointing at 50, a single rotation like R1000 would cause the dial to point at 0 ten times before returning back to 50!
|
||||||
|
|
||||||
|
Using password method 0x434C49434B, what is the password to open the door?
|
||||||
@@ -0,0 +1,57 @@
|
|||||||
|
--- Day 2: Gift Shop ---
|
||||||
|
You get inside and take the elevator to its only other stop: the gift shop. "Thank you for visiting the North Pole!" gleefully exclaims a nearby sign. You aren't sure who is even allowed to visit the North Pole, but you know you can access the lobby through here, and from there you can access the rest of the North Pole base.
|
||||||
|
|
||||||
|
As you make your way through the surprisingly extensive selection, one of the clerks recognizes you and asks for your help.
|
||||||
|
|
||||||
|
As it turns out, one of the younger Elves was playing on a gift shop computer and managed to add a whole bunch of invalid product IDs to their gift shop database! Surely, it would be no trouble for you to identify the invalid product IDs for them, right?
|
||||||
|
|
||||||
|
They've even checked most of the product ID ranges already; they only have a few product ID ranges (your puzzle input) that you'll need to check. For example:
|
||||||
|
|
||||||
|
11-22,95-115,998-1012,1188511880-1188511890,222220-222224,
|
||||||
|
1698522-1698528,446443-446449,38593856-38593862,565653-565659,
|
||||||
|
824824821-824824827,2121212118-2121212124
|
||||||
|
(The ID ranges are wrapped here for legibility; in your input, they appear on a single long line.)
|
||||||
|
|
||||||
|
The ranges are separated by commas (,); each range gives its first ID and last ID separated by a dash (-).
|
||||||
|
|
||||||
|
Since the young Elf was just doing silly patterns, you can find the invalid IDs by looking for any ID which is made only of some sequence of digits repeated twice. So, 55 (5 twice), 6464 (64 twice), and 123123 (123 twice) would all be invalid IDs.
|
||||||
|
|
||||||
|
None of the numbers have leading zeroes; 0101 isn't an ID at all. (101 is a valid ID that you would ignore.)
|
||||||
|
|
||||||
|
Your job is to find all of the invalid IDs that appear in the given ranges. In the above example:
|
||||||
|
|
||||||
|
11-22 has two invalid IDs, 11 and 22.
|
||||||
|
95-115 has one invalid ID, 99.
|
||||||
|
998-1012 has one invalid ID, 1010.
|
||||||
|
1188511880-1188511890 has one invalid ID, 1188511885.
|
||||||
|
222220-222224 has one invalid ID, 222222.
|
||||||
|
1698522-1698528 contains no invalid IDs.
|
||||||
|
446443-446449 has one invalid ID, 446446.
|
||||||
|
38593856-38593862 has one invalid ID, 38593859.
|
||||||
|
The rest of the ranges contain no invalid IDs.
|
||||||
|
Adding up all the invalid IDs in this example produces 1227775554.
|
||||||
|
|
||||||
|
What do you get if you add up all of the invalid IDs?
|
||||||
|
|
||||||
|
--- Part Two ---
|
||||||
|
The clerk quickly discovers that there are still invalid IDs in the ranges in your list. Maybe the young Elf was doing other silly patterns as well?
|
||||||
|
|
||||||
|
Now, an ID is invalid if it is made only of some sequence of digits repeated at least twice. So, 12341234 (1234 two times), 123123123 (123 three times), 1212121212 (12 five times), and 1111111 (1 seven times) are all invalid IDs.
|
||||||
|
|
||||||
|
From the same example as before:
|
||||||
|
|
||||||
|
11-22 still has two invalid IDs, 11 and 22.
|
||||||
|
95-115 now has two invalid IDs, 99 and 111.
|
||||||
|
998-1012 now has two invalid IDs, 999 and 1010.
|
||||||
|
1188511880-1188511890 still has one invalid ID, 1188511885.
|
||||||
|
222220-222224 still has one invalid ID, 222222.
|
||||||
|
1698522-1698528 still contains no invalid IDs.
|
||||||
|
446443-446449 still has one invalid ID, 446446.
|
||||||
|
38593856-38593862 still has one invalid ID, 38593859.
|
||||||
|
565653-565659 now has one invalid ID, 565656.
|
||||||
|
824824821-824824827 now has one invalid ID, 824824824.
|
||||||
|
2121212118-2121212124 now has one invalid ID, 2121212121.
|
||||||
|
Adding up all the invalid IDs in this example produces 4174379265.
|
||||||
|
|
||||||
|
What do you get if you add up all of the invalid IDs using these new rules?
|
||||||
|
|
||||||
@@ -0,0 +1,50 @@
|
|||||||
|
--- Day 3: Lobby ---
|
||||||
|
You descend a short staircase, enter the surprisingly vast lobby, and are quickly cleared by the security checkpoint. When you get to the main elevators, however, you discover that each one has a red light above it: they're all offline.
|
||||||
|
|
||||||
|
"Sorry about that," an Elf apologizes as she tinkers with a nearby control panel. "Some kind of electrical surge seems to have fried them. I'll try to get them online soon."
|
||||||
|
|
||||||
|
You explain your need to get further underground. "Well, you could at least take the escalator down to the printing department, not that you'd get much further than that without the elevators working. That is, you could if the escalator weren't also offline."
|
||||||
|
|
||||||
|
"But, don't worry! It's not fried; it just needs power. Maybe you can get it running while I keep working on the elevators."
|
||||||
|
|
||||||
|
There are batteries nearby that can supply emergency power to the escalator for just such an occasion. The batteries are each labeled with their joltage rating, a value from 1 to 9. You make a note of their joltage ratings (your puzzle input). For example:
|
||||||
|
|
||||||
|
987654321111111
|
||||||
|
811111111111119
|
||||||
|
234234234234278
|
||||||
|
818181911112111
|
||||||
|
The batteries are arranged into banks; each line of digits in your input corresponds to a single bank of batteries. Within each bank, you need to turn on exactly two batteries; the joltage that the bank produces is equal to the number formed by the digits on the batteries you've turned on. For example, if you have a bank like 12345 and you turn on batteries 2 and 4, the bank would produce 24 jolts. (You cannot rearrange batteries.)
|
||||||
|
|
||||||
|
You'll need to find the largest possible joltage each bank can produce. In the above example:
|
||||||
|
|
||||||
|
In 987654321111111, you can make the largest joltage possible, 98, by turning on the first two batteries.
|
||||||
|
In 811111111111119, you can make the largest joltage possible by turning on the batteries labeled 8 and 9, producing 89 jolts.
|
||||||
|
In 234234234234278, you can make 78 by turning on the last two batteries (marked 7 and 8).
|
||||||
|
In 818181911112111, the largest joltage you can produce is 92.
|
||||||
|
The total output joltage is the sum of the maximum joltage from each bank, so in this example, the total output joltage is 98 + 89 + 78 + 92 = 357.
|
||||||
|
|
||||||
|
There are many batteries in front of you. Find the maximum joltage possible from each bank; what is the total output joltage?
|
||||||
|
|
||||||
|
--- Part Two ---
|
||||||
|
The escalator doesn't move. The Elf explains that it probably needs more joltage to overcome the static friction of the system and hits the big red "joltage limit safety override" button. You lose count of the number of times she needs to confirm "yes, I'm sure" and decorate the lobby a bit while you wait.
|
||||||
|
|
||||||
|
Now, you need to make the largest joltage by turning on exactly twelve batteries within each bank.
|
||||||
|
|
||||||
|
The joltage output for the bank is still the number formed by the digits of the batteries you've turned on; the only difference is that now there will be 12 digits in each bank's joltage output instead of two.
|
||||||
|
|
||||||
|
Consider again the example from before:
|
||||||
|
|
||||||
|
987654321111111
|
||||||
|
811111111111119
|
||||||
|
234234234234278
|
||||||
|
818181911112111
|
||||||
|
Now, the joltages are much larger:
|
||||||
|
|
||||||
|
In 987654321111111, the largest joltage can be found by turning on everything except some 1s at the end to produce 987654321111.
|
||||||
|
In the digit sequence 811111111111119, the largest joltage can be found by turning on everything except some 1s, producing 811111111119.
|
||||||
|
In 234234234234278, the largest joltage can be found by turning on everything except a 2 battery, a 3 battery, and another 2 battery near the start to produce 434234234278.
|
||||||
|
In 818181911112111, the joltage 888911112111 is produced by turning on everything except some 1s near the front.
|
||||||
|
The total output joltage is now much larger: 987654321111 + 811111111119 + 434234234278 + 888911112111 = 3121910778619.
|
||||||
|
|
||||||
|
What is the new total output joltage?
|
||||||
|
|
||||||
@@ -0,0 +1,168 @@
|
|||||||
|
--- Day 4: Printing Department ---
|
||||||
|
You ride the escalator down to the printing department. They're clearly getting ready for Christmas; they have lots of large rolls of paper everywhere, and there's even a massive printer in the corner (to handle the really big print jobs).
|
||||||
|
|
||||||
|
Decorating here will be easy: they can make their own decorations. What you really need is a way to get further into the North Pole base while the elevators are offline.
|
||||||
|
|
||||||
|
"Actually, maybe we can help with that," one of the Elves replies when you ask for help. "We're pretty sure there's a cafeteria on the other side of the back wall. If we could break through the wall, you'd be able to keep moving. It's too bad all of our forklifts are so busy moving those big rolls of paper around."
|
||||||
|
|
||||||
|
If you can optimize the work the forklifts are doing, maybe they would have time to spare to break through the wall.
|
||||||
|
|
||||||
|
The rolls of paper (@) are arranged on a large grid; the Elves even have a helpful diagram (your puzzle input) indicating where everything is located.
|
||||||
|
|
||||||
|
For example:
|
||||||
|
|
||||||
|
..@@.@@@@.
|
||||||
|
@@@.@.@.@@
|
||||||
|
@@@@@.@.@@
|
||||||
|
@.@@@@..@.
|
||||||
|
@@.@@@@.@@
|
||||||
|
.@@@@@@@.@
|
||||||
|
.@.@.@.@@@
|
||||||
|
@.@@@.@@@@
|
||||||
|
.@@@@@@@@.
|
||||||
|
@.@.@@@.@.
|
||||||
|
The forklifts can only access a roll of paper if there are fewer than four rolls of paper in the eight adjacent positions. If you can figure out which rolls of paper the forklifts can access, they'll spend less time looking and more time breaking down the wall to the cafeteria.
|
||||||
|
|
||||||
|
In this example, there are 13 rolls of paper that can be accessed by a forklift (marked with x):
|
||||||
|
|
||||||
|
..xx.xx@x.
|
||||||
|
x@@.@.@.@@
|
||||||
|
@@@@@.x.@@
|
||||||
|
@.@@@@..@.
|
||||||
|
x@.@@@@.@x
|
||||||
|
.@@@@@@@.@
|
||||||
|
.@.@.@.@@@
|
||||||
|
x.@@@.@@@@
|
||||||
|
.@@@@@@@@.
|
||||||
|
x.x.@@@.x.
|
||||||
|
Consider your complete diagram of the paper roll locations. How many rolls of paper can be accessed by a forklift?
|
||||||
|
|
||||||
|
--- Part Two ---
|
||||||
|
Now, the Elves just need help accessing as much of the paper as they can.
|
||||||
|
|
||||||
|
Once a roll of paper can be accessed by a forklift, it can be removed. Once a roll of paper is removed, the forklifts might be able to access more rolls of paper, which they might also be able to remove. How many total rolls of paper could the Elves remove if they keep repeating this process?
|
||||||
|
|
||||||
|
Starting with the same example as above, here is one way you could remove as many rolls of paper as possible, using highlighted @ to indicate that a roll of paper is about to be removed, and using x to indicate that a roll of paper was just removed:
|
||||||
|
|
||||||
|
Initial state:
|
||||||
|
..@@.@@@@.
|
||||||
|
@@@.@.@.@@
|
||||||
|
@@@@@.@.@@
|
||||||
|
@.@@@@..@.
|
||||||
|
@@.@@@@.@@
|
||||||
|
.@@@@@@@.@
|
||||||
|
.@.@.@.@@@
|
||||||
|
@.@@@.@@@@
|
||||||
|
.@@@@@@@@.
|
||||||
|
@.@.@@@.@.
|
||||||
|
|
||||||
|
Remove 13 rolls of paper:
|
||||||
|
..xx.xx@x.
|
||||||
|
x@@.@.@.@@
|
||||||
|
@@@@@.x.@@
|
||||||
|
@.@@@@..@.
|
||||||
|
x@.@@@@.@x
|
||||||
|
.@@@@@@@.@
|
||||||
|
.@.@.@.@@@
|
||||||
|
x.@@@.@@@@
|
||||||
|
.@@@@@@@@.
|
||||||
|
x.x.@@@.x.
|
||||||
|
|
||||||
|
Remove 12 rolls of paper:
|
||||||
|
.......x..
|
||||||
|
.@@.x.x.@x
|
||||||
|
x@@@@...@@
|
||||||
|
x.@@@@..x.
|
||||||
|
.@.@@@@.x.
|
||||||
|
.x@@@@@@.x
|
||||||
|
.x.@.@.@@@
|
||||||
|
..@@@.@@@@
|
||||||
|
.x@@@@@@@.
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 7 rolls of paper:
|
||||||
|
..........
|
||||||
|
.x@.....x.
|
||||||
|
.@@@@...xx
|
||||||
|
..@@@@....
|
||||||
|
.x.@@@@...
|
||||||
|
..@@@@@@..
|
||||||
|
...@.@.@@x
|
||||||
|
..@@@.@@@@
|
||||||
|
..x@@@@@@.
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 5 rolls of paper:
|
||||||
|
..........
|
||||||
|
..x.......
|
||||||
|
.x@@@.....
|
||||||
|
..@@@@....
|
||||||
|
...@@@@...
|
||||||
|
..x@@@@@..
|
||||||
|
...@.@.@@.
|
||||||
|
..x@@.@@@x
|
||||||
|
...@@@@@@.
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 2 rolls of paper:
|
||||||
|
..........
|
||||||
|
..........
|
||||||
|
..x@@.....
|
||||||
|
..@@@@....
|
||||||
|
...@@@@...
|
||||||
|
...@@@@@..
|
||||||
|
...@.@.@@.
|
||||||
|
...@@.@@@.
|
||||||
|
...@@@@@x.
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 1 roll of paper:
|
||||||
|
..........
|
||||||
|
..........
|
||||||
|
...@@.....
|
||||||
|
..x@@@....
|
||||||
|
...@@@@...
|
||||||
|
...@@@@@..
|
||||||
|
...@.@.@@.
|
||||||
|
...@@.@@@.
|
||||||
|
...@@@@@..
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 1 roll of paper:
|
||||||
|
..........
|
||||||
|
..........
|
||||||
|
...x@.....
|
||||||
|
...@@@....
|
||||||
|
...@@@@...
|
||||||
|
...@@@@@..
|
||||||
|
...@.@.@@.
|
||||||
|
...@@.@@@.
|
||||||
|
...@@@@@..
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 1 roll of paper:
|
||||||
|
..........
|
||||||
|
..........
|
||||||
|
....x.....
|
||||||
|
...@@@....
|
||||||
|
...@@@@...
|
||||||
|
...@@@@@..
|
||||||
|
...@.@.@@.
|
||||||
|
...@@.@@@.
|
||||||
|
...@@@@@..
|
||||||
|
....@@@...
|
||||||
|
|
||||||
|
Remove 1 roll of paper:
|
||||||
|
..........
|
||||||
|
..........
|
||||||
|
..........
|
||||||
|
...x@@....
|
||||||
|
...@@@@...
|
||||||
|
...@@@@@..
|
||||||
|
...@.@.@@.
|
||||||
|
...@@.@@@.
|
||||||
|
...@@@@@..
|
||||||
|
....@@@...
|
||||||
|
Stop once no more rolls of paper are accessible by a forklift. In this example, a total of 43 rolls of paper can be removed.
|
||||||
|
|
||||||
|
Start with your original diagram. How many rolls of paper in total can be removed by the Elves and their forklifts?
|
||||||
@@ -0,0 +1,51 @@
|
|||||||
|
--- Day 5: Cafeteria ---
|
||||||
|
As the forklifts break through the wall, the Elves are delighted to discover that there was a cafeteria on the other side after all.
|
||||||
|
|
||||||
|
You can hear a commotion coming from the kitchen. "At this rate, we won't have any time left to put the wreaths up in the dining hall!" Resolute in your quest, you investigate.
|
||||||
|
|
||||||
|
"If only we hadn't switched to the new inventory management system right before Christmas!" another Elf exclaims. You ask what's going on.
|
||||||
|
|
||||||
|
The Elves in the kitchen explain the situation: because of their complicated new inventory management system, they can't figure out which of their ingredients are fresh and which are spoiled. When you ask how it works, they give you a copy of their database (your puzzle input).
|
||||||
|
|
||||||
|
The database operates on ingredient IDs. It consists of a list of fresh ingredient ID ranges, a blank line, and a list of available ingredient IDs. For example:
|
||||||
|
|
||||||
|
3-5
|
||||||
|
10-14
|
||||||
|
16-20
|
||||||
|
12-18
|
||||||
|
|
||||||
|
1
|
||||||
|
5
|
||||||
|
8
|
||||||
|
11
|
||||||
|
17
|
||||||
|
32
|
||||||
|
The fresh ID ranges are inclusive: the range 3-5 means that ingredient IDs 3, 4, and 5 are all fresh. The ranges can also overlap; an ingredient ID is fresh if it is in any range.
|
||||||
|
|
||||||
|
The Elves are trying to determine which of the available ingredient IDs are fresh. In this example, this is done as follows:
|
||||||
|
|
||||||
|
Ingredient ID 1 is spoiled because it does not fall into any range.
|
||||||
|
Ingredient ID 5 is fresh because it falls into range 3-5.
|
||||||
|
Ingredient ID 8 is spoiled.
|
||||||
|
Ingredient ID 11 is fresh because it falls into range 10-14.
|
||||||
|
Ingredient ID 17 is fresh because it falls into range 16-20 as well as range 12-18.
|
||||||
|
Ingredient ID 32 is spoiled.
|
||||||
|
So, in this example, 3 of the available ingredient IDs are fresh.
|
||||||
|
|
||||||
|
Process the database file from the new inventory management system. How many of the available ingredient IDs are fresh?
|
||||||
|
|
||||||
|
--- Part Two ---
|
||||||
|
The Elves start bringing their spoiled inventory to the trash chute at the back of the kitchen.
|
||||||
|
|
||||||
|
So that they can stop bugging you when they get new inventory, the Elves would like to know all of the IDs that the fresh ingredient ID ranges consider to be fresh. An ingredient ID is still considered fresh if it is in any range.
|
||||||
|
|
||||||
|
Now, the second section of the database (the available ingredient IDs) is irrelevant. Here are the fresh ingredient ID ranges from the above example:
|
||||||
|
|
||||||
|
3-5
|
||||||
|
10-14
|
||||||
|
16-20
|
||||||
|
12-18
|
||||||
|
The ingredient IDs that these ranges consider to be fresh are 3, 4, 5, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20. So, in this example, the fresh ingredient ID ranges consider a total of 14 ingredient IDs to be fresh.
|
||||||
|
|
||||||
|
Process the database file again. How many ingredient IDs are considered to be fresh according to the fresh ingredient ID ranges?
|
||||||
|
|
||||||
@@ -0,0 +1,49 @@
|
|||||||
|
--- Day 6: Trash Compactor ---
|
||||||
|
After helping the Elves in the kitchen, you were taking a break and helping them re-enact a movie scene when you over-enthusiastically jumped into the garbage chute!
|
||||||
|
|
||||||
|
A brief fall later, you find yourself in a garbage smasher. Unfortunately, the door's been magnetically sealed.
|
||||||
|
|
||||||
|
As you try to find a way out, you are approached by a family of cephalopods! They're pretty sure they can get the door open, but it will take some time. While you wait, they're curious if you can help the youngest cephalopod with her math homework.
|
||||||
|
|
||||||
|
Cephalopod math doesn't look that different from normal math. The math worksheet (your puzzle input) consists of a list of problems; each problem has a group of numbers that need to be either added (+) or multiplied (*) together.
|
||||||
|
|
||||||
|
However, the problems are arranged a little strangely; they seem to be presented next to each other in a very long horizontal list. For example:
|
||||||
|
|
||||||
|
123 328 51 64
|
||||||
|
45 64 387 23
|
||||||
|
6 98 215 314
|
||||||
|
* + * +
|
||||||
|
Each problem's numbers are arranged vertically; at the bottom of the problem is the symbol for the operation that needs to be performed. Problems are separated by a full column of only spaces. The left/right alignment of numbers within each problem can be ignored.
|
||||||
|
|
||||||
|
So, this worksheet contains four problems:
|
||||||
|
|
||||||
|
123 * 45 * 6 = 33210
|
||||||
|
328 + 64 + 98 = 490
|
||||||
|
51 * 387 * 215 = 4243455
|
||||||
|
64 + 23 + 314 = 401
|
||||||
|
To check their work, cephalopod students are given the grand total of adding together all of the answers to the individual problems. In this worksheet, the grand total is 33210 + 490 + 4243455 + 401 = 4277556.
|
||||||
|
|
||||||
|
Of course, the actual worksheet is much wider. You'll need to make sure to unroll it completely so that you can read the problems clearly.
|
||||||
|
|
||||||
|
Solve the problems on the math worksheet. What is the grand total found by adding together all of the answers to the individual problems?
|
||||||
|
|
||||||
|
--- Part Two ---
|
||||||
|
The big cephalopods come back to check on how things are going. When they see that your grand total doesn't match the one expected by the worksheet, they realize they forgot to explain how to read cephalopod math.
|
||||||
|
|
||||||
|
Cephalopod math is written right-to-left in columns. Each number is given in its own column, with the most significant digit at the top and the least significant digit at the bottom. (Problems are still separated with a column consisting only of spaces, and the symbol at the bottom of the problem is still the operator to use.)
|
||||||
|
|
||||||
|
Here's the example worksheet again:
|
||||||
|
|
||||||
|
123 328 51 64
|
||||||
|
45 64 387 23
|
||||||
|
6 98 215 314
|
||||||
|
* + * +
|
||||||
|
Reading the problems right-to-left one column at a time, the problems are now quite different:
|
||||||
|
|
||||||
|
The rightmost problem is 4 + 431 + 623 = 1058
|
||||||
|
The second problem from the right is 175 * 581 * 32 = 3253600
|
||||||
|
The third problem from the right is 8 + 248 + 369 = 625
|
||||||
|
Finally, the leftmost problem is 356 * 24 * 1 = 8544
|
||||||
|
Now, the grand total is 1058 + 3253600 + 625 + 8544 = 3263827.
|
||||||
|
|
||||||
|
Solve the problems on the math worksheet again. What is the grand total found by adding together all of the answers to the individual problems?
|
||||||
@@ -7,6 +7,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AOC.Tests", "AOC.Tests\AOC.
|
|||||||
EndProject
|
EndProject
|
||||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DayCreator", "DayCreator\DayCreator.csproj", "{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}"
|
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DayCreator", "DayCreator\DayCreator.csproj", "{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}"
|
||||||
EndProject
|
EndProject
|
||||||
|
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AOC.Helpers", "AOC.Helpers\AOC.Helpers.csproj", "{63782BBE-C14A-407A-9980-CD31088D4CD3}"
|
||||||
|
EndProject
|
||||||
Global
|
Global
|
||||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||||
Debug|Any CPU = Debug|Any CPU
|
Debug|Any CPU = Debug|Any CPU
|
||||||
@@ -21,6 +23,10 @@ Global
|
|||||||
{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||||
{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||||
{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}.Release|Any CPU.Build.0 = Release|Any CPU
|
{BBA91797-9C84-4A8D-9C12-9AE4D3C3EF83}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||||
|
{63782BBE-C14A-407A-9980-CD31088D4CD3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||||
|
{63782BBE-C14A-407A-9980-CD31088D4CD3}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||||
|
{63782BBE-C14A-407A-9980-CD31088D4CD3}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||||
|
{63782BBE-C14A-407A-9980-CD31088D4CD3}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||||
EndGlobalSection
|
EndGlobalSection
|
||||||
GlobalSection(SolutionProperties) = preSolution
|
GlobalSection(SolutionProperties) = preSolution
|
||||||
HideSolutionNode = FALSE
|
HideSolutionNode = FALSE
|
||||||
|
|||||||
@@ -1,6 +1,16 @@
|
|||||||
<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
|
<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
|
||||||
|
<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AAssert_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003F_002E_002E_003F_002E_002E_003FLibrary_003FApplication_0020Support_003FJetBrains_003FRider2025_002E2_003Fresharper_002Dhost_003FSourcesCache_003F98514e314f1feddb3082dbe8507ecec1a81b6491c0db7dc53c2e8c13949e4360_003FAssert_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
|
||||||
|
<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=0c7a82d2_002D8845_002D443d_002Db134_002D726f0b837c61/@EntryIndexedValue"><SessionState ContinuousTestingMode="0" IsActive="True" Name="Day06" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session">
|
||||||
|
<TestAncestor>
|
||||||
|
<TestId>NUnit3x::2E0193E1-5DD3-40A6-A07B-C6E58341ACA0::net8.0::AOC.Tests.Y2025.Day06</TestId>
|
||||||
|
</TestAncestor>
|
||||||
|
</SessionState></s:String>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=8ddce0d5_002Db323_002D41bb_002Da920_002D6cc320742199/@EntryIndexedValue"><SessionState ContinuousTestingMode="0" IsActive="True" Name="All tests from Y2024" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session">
|
<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=8ddce0d5_002Db323_002D41bb_002Da920_002D6cc320742199/@EntryIndexedValue"><SessionState ContinuousTestingMode="0" IsActive="True" Name="All tests from Y2024" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session">
|
||||||
<ProjectFolder>2E0193E1-5DD3-40A6-A07B-C6E58341ACA0/d:Y2024</ProjectFolder>
|
<ProjectFolder>2E0193E1-5DD3-40A6-A07B-C6E58341ACA0/d:Y2024</ProjectFolder>
|
||||||
</SessionState></s:String></wpf:ResourceDictionary>
|
</SessionState></s:String>
|
||||||
|
|
||||||
|
|
||||||
|
</wpf:ResourceDictionary>
|
||||||
@@ -0,0 +1,16 @@
|
|||||||
|
After feeling like you've been falling for a few minutes, you look at the device's tiny screen. "Error: Device must be calibrated before first use. Frequency drift detected. Cannot maintain destination lock." Below the message, the device shows a sequence of changes in frequency (your puzzle input). A value like +6 means the current frequency increases by 6; a value like -3 means the current frequency decreases by 3.
|
||||||
|
|
||||||
|
For example, if the device displays frequency changes of +1, -2, +3, +1, then starting from a frequency of zero, the following changes would occur:
|
||||||
|
|
||||||
|
Current frequency 0, change of +1; resulting frequency 1.
|
||||||
|
Current frequency 1, change of -2; resulting frequency -1.
|
||||||
|
Current frequency -1, change of +3; resulting frequency 2.
|
||||||
|
Current frequency 2, change of +1; resulting frequency 3.
|
||||||
|
In this example, the resulting frequency is 3.
|
||||||
|
|
||||||
|
Here are other example situations:
|
||||||
|
|
||||||
|
+1, +1, +1 results in 3
|
||||||
|
+1, +1, -2 results in 0
|
||||||
|
-1, -2, -3 results in -6
|
||||||
|
Starting with a frequency of zero, what is the resulting frequency after all of the changes in frequency have been applied?
|
||||||
@@ -0,0 +1,20 @@
|
|||||||
|
You notice that the device repeats the same frequency change list over and over. To calibrate the device, you need to find the first frequency it reaches twice.
|
||||||
|
|
||||||
|
For example, using the same list of changes above, the device would loop as follows:
|
||||||
|
|
||||||
|
Current frequency 0, change of +1; resulting frequency 1.
|
||||||
|
Current frequency 1, change of -2; resulting frequency -1.
|
||||||
|
Current frequency -1, change of +3; resulting frequency 2.
|
||||||
|
Current frequency 2, change of +1; resulting frequency 3.
|
||||||
|
(At this point, the device continues from the start of the list.)
|
||||||
|
Current frequency 3, change of +1; resulting frequency 4.
|
||||||
|
Current frequency 4, change of -2; resulting frequency 2, which has already been seen.
|
||||||
|
In this example, the first frequency reached twice is 2. Note that your device might need to repeat its list of frequency changes many times before a duplicate frequency is found, and that duplicates might be found while in the middle of processing the list.
|
||||||
|
|
||||||
|
Here are other examples:
|
||||||
|
|
||||||
|
+1, -1 first reaches 0 twice.
|
||||||
|
+3, +3, +4, -2, -4 first reaches 10 twice.
|
||||||
|
-6, +3, +8, +5, -6 first reaches 5 twice.
|
||||||
|
+7, +7, -2, -7, -4 first reaches 14 twice.
|
||||||
|
What is the first frequency your device reaches twice?
|
||||||
@@ -0,0 +1,977 @@
|
|||||||
|
-12
|
||||||
|
-6
|
||||||
|
-12
|
||||||
|
+1
|
||||||
|
+3
|
||||||
|
+3
|
||||||
|
-1
|
||||||
|
+10
|
||||||
|
-8
|
||||||
|
-9
|
||||||
|
-11
|
||||||
|
-2
|
||||||
|
-7
|
||||||
|
+15
|
||||||
|
+16
|
||||||
|
+14
|
||||||
|
-2
|
||||||
|
-5
|
||||||
|
+11
|
||||||
|
-8
|
||||||
|
-5
|
||||||
|
-1
|
||||||
|
-19
|
||||||
|
-14
|
||||||
|
+6
|
||||||
|
-16
|
||||||
|
-8
|
||||||
|
-13
|
||||||
|
-19
|
||||||
|
-11
|
||||||
|
+3
|
||||||
|
-19
|
||||||
|
+3
|
||||||
|
-19
|
||||||
|
+9
|
||||||
|
-15
|
||||||
|
-11
|
||||||
|
+18
|
||||||
|
-9
|
||||||
|
+13
|
||||||
|
-17
|
||||||
|
-16
|
||||||
|
-13
|
||||||
|
-16
|
||||||
|
+19
|
||||||
|
+17
|
||||||
|
-18
|
||||||
|
-8
|
||||||
|
-5
|
||||||
|
+6
|
||||||
|
+9
|
||||||
|
+8
|
||||||
|
-7
|
||||||
|
-8
|
||||||
|
+2
|
||||||
|
-9
|
||||||
|
+2
|
||||||
|
-9
|
||||||
|
-5
|
||||||
|
-3
|
||||||
|
+4
|
||||||
|
-13
|
||||||
|
-5
|
||||||
|
+11
|
||||||
|
+14
|
||||||
|
+5
|
||||||
|
+17
|
||||||
|
-1
|
||||||
|
+9
|
||||||
|
+6
|
||||||
|
+14
|
||||||
|
-9
|
||||||
|
+4
|
||||||
|
-3
|
||||||
|
-13
|
||||||
|
-5
|
||||||
|
+13
|
||||||
|
-2
|
||||||
|
-10
|
||||||
|
-18
|
||||||
|
-12
|
||||||
|
+4
|
||||||
|
+13
|
||||||
|
-10
|
||||||
|
-11
|
||||||
|
-10
|
||||||
|
-17
|
||||||
|
-13
|
||||||
|
+12
|
||||||
|
-19
|
||||||
|
-7
|
||||||
|
-13
|
||||||
|
+5
|
||||||
|
-8
|
||||||
|
-11
|
||||||
|
+5
|
||||||
|
+7
|
||||||
|
+17
|
||||||
|
-14
|
||||||
|
+22
|
||||||
|
+14
|
||||||
|
+7
|
||||||
|
-8
|
||||||
|
+7
|
||||||
|
-19
|
||||||
|
+14
|
||||||
|
-20
|
||||||
|
+16
|
||||||
|
+12
|
||||||
|
+3
|
||||||
|
+5
|
||||||
|
+1
|
||||||
|
-8
|
||||||
|
+1
|
||||||
|
+15
|
||||||
|
+3
|
||||||
|
-6
|
||||||
|
-8
|
||||||
|
+9
|
||||||
|
+3
|
||||||
|
-19
|
||||||
|
-19
|
||||||
|
-19
|
||||||
|
+1
|
||||||
|
-16
|
||||||
|
-13
|
||||||
|
+5
|
||||||
|
-13
|
||||||
|
+2
|
||||||
|
-15
|
||||||
|
-15
|
||||||
|
-4
|
||||||
|
+12
|
||||||
|
+1
|
||||||
|
-10
|
||||||
|
-5
|
||||||
|
-11
|
||||||
|
-9
|
||||||
|
-11
|
||||||
|
-7
|
||||||
|
+10
|
||||||
|
-18
|
||||||
|
+16
|
||||||
|
-12
|
||||||
|
-19
|
||||||
|
-17
|
||||||
|
-18
|
||||||
|
+2
|
||||||
|
+15
|
||||||
|
+11
|
||||||
|
+9
|
||||||
|
-17
|
||||||
|
+4
|
||||||
|
+9
|
||||||
|
-18
|
||||||
|
-6
|
||||||
|
-1
|
||||||
|
-1
|
||||||
|
-18
|
||||||
|
-15
|
||||||
|
-18
|
||||||
|
-7
|
||||||
|
+16
|
||||||
|
+18
|
||||||
|
+18
|
||||||
|
-2
|
||||||
|
-4
|
||||||
|
+1
|
||||||
|
+15
|
||||||
|
+16
|
||||||
|
+18
|
||||||
|
+7
|
||||||
|
-18
|
||||||
|
+6
|
||||||
|
+8
|
||||||
|
+15
|
||||||
|
-8
|
||||||
|
-16
|
||||||
|
-3
|
||||||
|
+11
|
||||||
|
+9
|
||||||
|
+1
|
||||||
|
+4
|
||||||
|
-18
|
||||||
|
+3
|
||||||
|
-16
|
||||||
|
-14
|
||||||
|
-18
|
||||||
|
-10
|
||||||
|
+6
|
||||||
|
-12
|
||||||
|
-12
|
||||||
|
-2
|
||||||
|
-8
|
||||||
|
+1
|
||||||
|
-3
|
||||||
|
-11
|
||||||
|
+1
|
||||||
|
-5
|
||||||
|
-4
|
||||||
|
-5
|
||||||
|
+8
|
||||||
|
+8
|
||||||
|
-4
|
||||||
|
-10
|
||||||
|
+16
|
||||||
|
-1
|
||||||
|
+3
|
||||||
|
+9
|
||||||
|
+6
|
||||||
|
+24
|
||||||
|
+12
|
||||||
|
-2
|
||||||
|
+11
|
||||||
|
-1
|
||||||
|
-9
|
||||||
|
+21
|
||||||
|
-15
|
||||||
|
+12
|
||||||
|
+19
|
||||||
|
-3
|
||||||
|
+21
|
||||||
|
+20
|
||||||
|
+16
|
||||||
|
-4
|
||||||
|
+15
|
||||||
|
+9
|
||||||
|
+13
|
||||||
|
-16
|
||||||
|
+13
|
||||||
|
-1
|
||||||
|
-16
|
||||||
|
+13
|
||||||
|
+19
|
||||||
|
+14
|
||||||
|
+19
|
||||||
|
+14
|
||||||
|
-17
|
||||||
|
+18
|
||||||
|
+1
|
||||||
|
+11
|
||||||
|
+18
|
||||||
|
+18
|
||||||
|
+22
|
||||||
|
-8
|
||||||
|
+18
|
||||||
|
-1
|
||||||
|
+19
|
||||||
|
-11
|
||||||
|
-20
|
||||||
|
+11
|
||||||
|
+8
|
||||||
|
-11
|
||||||
|
+25
|
||||||
|
+13
|
||||||
|
+3
|
||||||
|
-1
|
||||||
|
-3
|
||||||
|
+17
|
||||||
|
+15
|
||||||
|
+7
|
||||||
|
+19
|
||||||
|
-7
|
||||||
|
+19
|
||||||
|
-1
|
||||||
|
-12
|
||||||
|
-14
|
||||||
|
+17
|
||||||
|
-15
|
||||||
|
-1
|
||||||
|
-18
|
||||||
|
+9
|
||||||
|
+14
|
||||||
|
-19
|
||||||
|
+10
|
||||||
|
-9
|
||||||
|
-11
|
||||||
|
+7
|
||||||
|
+20
|
||||||
|
+20
|
||||||
|
-1
|
||||||
|
+19
|
||||||
|
+1
|
||||||
|
+7
|
||||||
|
-19
|
||||||
|
-15
|
||||||
|
+3
|
||||||
|
+1
|
||||||
|
+17
|
||||||
|
+11
|
||||||
|
-7
|
||||||
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||||||
|
+1
|
||||||
|
-31
|
||||||
|
-22
|
||||||
|
-17
|
||||||
|
-7
|
||||||
|
-15
|
||||||
|
-5
|
||||||
|
+2
|
||||||
|
-3
|
||||||
|
+15
|
||||||
|
+12
|
||||||
|
-5
|
||||||
|
-10
|
||||||
|
+1
|
||||||
|
+7
|
||||||
|
-6
|
||||||
|
+17
|
||||||
|
+2
|
||||||
|
+2
|
||||||
|
-19
|
||||||
|
-7
|
||||||
|
+15
|
||||||
|
-6
|
||||||
|
-7
|
||||||
|
-1
|
||||||
|
+7
|
||||||
|
-12
|
||||||
|
-6
|
||||||
|
-18
|
||||||
|
-14
|
||||||
|
+6
|
||||||
|
-4
|
||||||
|
-16
|
||||||
|
-13
|
||||||
|
+5
|
||||||
|
-13
|
||||||
|
+4
|
||||||
|
+16
|
||||||
|
-8
|
||||||
|
+13
|
||||||
|
+11
|
||||||
|
-2
|
||||||
|
-7
|
||||||
|
-5
|
||||||
|
-8
|
||||||
|
+1
|
||||||
|
+9
|
||||||
|
+6
|
||||||
|
-2
|
||||||
|
+19
|
||||||
|
-4
|
||||||
|
+5
|
||||||
|
+10
|
||||||
|
+2
|
||||||
|
-9
|
||||||
|
+10
|
||||||
|
-15
|
||||||
|
+7
|
||||||
|
+11
|
||||||
|
+6
|
||||||
|
-14
|
||||||
|
-11
|
||||||
|
-6
|
||||||
|
+3
|
||||||
|
-16
|
||||||
|
-19
|
||||||
|
-6
|
||||||
|
-3
|
||||||
|
-3
|
||||||
|
-11
|
||||||
|
+19
|
||||||
|
+16
|
||||||
|
-10
|
||||||
|
+14
|
||||||
|
+15
|
||||||
|
+2
|
||||||
|
+15
|
||||||
|
+21
|
||||||
|
+15
|
||||||
|
+7
|
||||||
|
+19
|
||||||
|
+2
|
||||||
|
+52
|
||||||
|
+13
|
||||||
|
+24
|
||||||
|
-32
|
||||||
|
-126
|
||||||
|
-18
|
||||||
|
+1
|
||||||
|
-17
|
||||||
|
-14
|
||||||
|
-14
|
||||||
|
+3
|
||||||
|
-19
|
||||||
|
-17
|
||||||
|
+13
|
||||||
|
+17
|
||||||
|
-20
|
||||||
|
-1
|
||||||
|
+17
|
||||||
|
+2
|
||||||
|
+14
|
||||||
|
-7
|
||||||
|
-8
|
||||||
|
+12
|
||||||
|
-1
|
||||||
|
-14
|
||||||
|
+1
|
||||||
|
+26
|
||||||
|
-14
|
||||||
|
-17
|
||||||
|
+3
|
||||||
|
-17
|
||||||
|
+13
|
||||||
|
-3
|
||||||
|
+5
|
||||||
|
-7
|
||||||
|
+20
|
||||||
|
-2
|
||||||
|
+24
|
||||||
|
+20
|
||||||
|
-13
|
||||||
|
-19
|
||||||
|
-22
|
||||||
|
-19
|
||||||
|
+12
|
||||||
|
+35
|
||||||
|
+5
|
||||||
|
+34
|
||||||
|
+8
|
||||||
|
+2
|
||||||
|
+11
|
||||||
|
-2
|
||||||
|
-1
|
||||||
|
+13
|
||||||
|
-9
|
||||||
|
-7
|
||||||
|
-2
|
||||||
|
-28
|
||||||
|
-33
|
||||||
|
-71491
|
||||||
@@ -0,0 +1,9 @@
|
|||||||
|
+3
|
||||||
|
+12
|
||||||
|
-6
|
||||||
|
-2
|
||||||
|
-4
|
||||||
|
-12
|
||||||
|
+4
|
||||||
|
+5
|
||||||
|
-7
|
||||||
@@ -0,0 +1,17 @@
|
|||||||
|
// AdventOfCode2018-01
|
||||||
|
var fs = require('fs');
|
||||||
|
var frequency = 0;
|
||||||
|
|
||||||
|
var textFile = fs.readFileSync('./input.txt').toString();
|
||||||
|
var textArray = textFile.split(/\r?\n/);
|
||||||
|
|
||||||
|
textArray.forEach(line => {
|
||||||
|
if (line.substr(0,1) == '+') {
|
||||||
|
frequency += parseInt(line.substr(1));
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
frequency -= parseInt(line.substr(1));
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
console.log('The resulting frequency is ' + frequency);
|
||||||
@@ -0,0 +1,50 @@
|
|||||||
|
// AdventOfCode2018-01
|
||||||
|
var freqChanges = [];
|
||||||
|
|
||||||
|
function parseInput(inputFile) {
|
||||||
|
// for each line in text file parse the symbol (first character) and the number into an array of objects
|
||||||
|
var fs = require('fs'),
|
||||||
|
readline = require('readline'),
|
||||||
|
instream = fs.createReadStream(inputFile),
|
||||||
|
outstream = new (require('stream'))(),
|
||||||
|
rl = readline.createInterface(instream, outstream);
|
||||||
|
|
||||||
|
rl.on('line', function (line) {
|
||||||
|
var object = {
|
||||||
|
operation: line.substr(0,1),
|
||||||
|
value: parseInt(line.substr(1))
|
||||||
|
}
|
||||||
|
freqChanges.push(object);
|
||||||
|
});
|
||||||
|
|
||||||
|
rl.on('close', function (line) {
|
||||||
|
//console.log(line);
|
||||||
|
//console.log('done reading file.');
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
parseInput('./input1.txt');
|
||||||
|
|
||||||
|
// Starting from zero, loop through all the entries in the array and apply the operations
|
||||||
|
var frequency = 0;
|
||||||
|
console.log('length=' + freqChanges.length);
|
||||||
|
freqChanges.forEach( function (object) {
|
||||||
|
console.log('Object contains ' + object.toString());
|
||||||
|
if (object.operation == '+') {
|
||||||
|
frequency += object.value;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
frequency -= object.value;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
// for (i in freqChanges) { //(var i = 0; i < freqChanges.length; i++) {
|
||||||
|
// console.log(freqChanges[i].toString());
|
||||||
|
// if (freqChanges[i].operation = '+') {
|
||||||
|
// frequency += freqChanges[i].value;
|
||||||
|
// }
|
||||||
|
// else {
|
||||||
|
// frequency -= freqChanges[i].value;
|
||||||
|
// }
|
||||||
|
// }
|
||||||
|
|
||||||
|
console.log('The resulting frequency is ' + frequency);
|
||||||
@@ -0,0 +1,29 @@
|
|||||||
|
// AdventOfCode2018-01
|
||||||
|
|
||||||
|
var frequency = 0;
|
||||||
|
|
||||||
|
// for each line in text file parse the symbol (first character) and the number into an array of objects
|
||||||
|
var fs = require('fs'),
|
||||||
|
readline = require('readline'),
|
||||||
|
instream = fs.createReadStream('./input1.txt'),
|
||||||
|
outstream = new (require('stream'))(),
|
||||||
|
rl = readline.createInterface(instream, outstream);
|
||||||
|
|
||||||
|
rl.on('line', function (line) {
|
||||||
|
console.log(line.substr(0,1));
|
||||||
|
if (line.substr(0,1) = '+') {
|
||||||
|
console.log(parseInt(line.substr(1)));
|
||||||
|
frequency += parseInt(line.substr(1));
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
console.log(parseInt(line.substr(1)));
|
||||||
|
frequency -= parseInt(line.substr(1));
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
rl.on('close', function (line) {
|
||||||
|
//console.log(line);
|
||||||
|
//console.log('done reading file.');
|
||||||
|
});
|
||||||
|
|
||||||
|
console.log('The resulting frequency is ' + frequency);
|
||||||
@@ -0,0 +1,33 @@
|
|||||||
|
// AdventOfCode2018-01
|
||||||
|
var fs = require('fs');
|
||||||
|
var frequency = 0;
|
||||||
|
var frequencyHistory = [];
|
||||||
|
var loopCount = 0;
|
||||||
|
|
||||||
|
var textFile = fs.readFileSync('./input.txt').toString();
|
||||||
|
var textArray = textFile.split(/\r?\n/);
|
||||||
|
|
||||||
|
var foundDuplicate = false;
|
||||||
|
while (!foundDuplicate) {
|
||||||
|
for (var line of textArray) {
|
||||||
|
if (line.substr(0,1) == '+') {
|
||||||
|
frequency += parseInt(line.substr(1));
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
frequency -= parseInt(line.substr(1));
|
||||||
|
}
|
||||||
|
//console.log(frequency.toString());
|
||||||
|
if (frequencyHistory.includes(frequency)) {
|
||||||
|
console.log('The first repeated frequency is ' + frequency);
|
||||||
|
firstRepeatedFrequency = frequency;
|
||||||
|
foundDuplicate = true;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
frequencyHistory.push(frequency);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
loopCount += 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
console.log(loopCount);
|
||||||
@@ -0,0 +1,23 @@
|
|||||||
|
--- Day 2: Inventory Management System ---
|
||||||
|
You stop falling through time, catch your breath, and check the screen on the device. "Destination reached. Current Year: 1518. Current Location: North Pole Utility Closet 83N10." You made it! Now, to find those anomalies.
|
||||||
|
|
||||||
|
Outside the utility closet, you hear footsteps and a voice. "...I'm not sure either. But now that so many people have chimneys, maybe he could sneak in that way?" Another voice responds, "Actually, we've been working on a new kind of suit that would let him fit through tight spaces like that. But, I heard that a few days ago, they lost the prototype fabric, the design plans, everything! Nobody on the team can even seem to remember important details of the project!"
|
||||||
|
|
||||||
|
"Wouldn't they have had enough fabric to fill several boxes in the warehouse? They'd be stored together, so the box IDs should be similar. Too bad it would take forever to search the warehouse for two similar box IDs..." They walk too far away to hear any more.
|
||||||
|
|
||||||
|
Late at night, you sneak to the warehouse - who knows what kinds of paradoxes you could cause if you were discovered - and use your fancy wrist device to quickly scan every box and produce a list of the likely candidates (your puzzle input).
|
||||||
|
|
||||||
|
To make sure you didn't miss any, you scan the likely candidate boxes again, counting the number that have an ID containing exactly two of any letter and then separately counting those with exactly three of any letter. You can multiply those two counts together to get a rudimentary checksum and compare it to what your device predicts.
|
||||||
|
|
||||||
|
For example, if you see the following box IDs:
|
||||||
|
|
||||||
|
abcdef contains no letters that appear exactly two or three times.
|
||||||
|
bababc contains two a and three b, so it counts for both.
|
||||||
|
abbcde contains two b, but no letter appears exactly three times.
|
||||||
|
abcccd contains three c, but no letter appears exactly two times.
|
||||||
|
aabcdd contains two a and two d, but it only counts once.
|
||||||
|
abcdee contains two e.
|
||||||
|
ababab contains three a and three b, but it only counts once.
|
||||||
|
Of these box IDs, four of them contain a letter which appears exactly twice, and three of them contain a letter which appears exactly three times. Multiplying these together produces a checksum of 4 * 3 = 12.
|
||||||
|
|
||||||
|
What is the checksum for your list of box IDs?
|
||||||
@@ -0,0 +1,15 @@
|
|||||||
|
--- Part Two ---
|
||||||
|
Confident that your list of box IDs is complete, you're ready to find the boxes full of prototype fabric.
|
||||||
|
|
||||||
|
The boxes will have IDs which differ by exactly one character at the same position in both strings. For example, given the following box IDs:
|
||||||
|
|
||||||
|
abcde
|
||||||
|
fghij
|
||||||
|
klmno
|
||||||
|
pqrst
|
||||||
|
fguij
|
||||||
|
axcye
|
||||||
|
wvxyz
|
||||||
|
The IDs abcde and axcye are close, but they differ by two characters (the second and fourth). However, the IDs fghij and fguij differ by exactly one character, the third (h and u). Those must be the correct boxes.
|
||||||
|
|
||||||
|
What letters are common between the two correct box IDs? (In the example above, this is found by removing the differing character from either ID, producing fgij.)
|
||||||
@@ -0,0 +1,250 @@
|
|||||||
|
mphcuiszrnjzxwkbgdzqeoyxfa
|
||||||
|
mihcuisgrnjzxwkbgdtqeoylia
|
||||||
|
mphauisvrnjgxwkbgdtqeiylfa
|
||||||
|
mphcuisnrnjzxwkbgdgqeoylua
|
||||||
|
mphcuisurnjzxwkbgdtqeoilfi
|
||||||
|
mkhcuisvrnjzowkbgdteeoylfa
|
||||||
|
mphcoicvrnjzxwksgdtqeoylfa
|
||||||
|
mxhcuisvrndzxwkbgdtqeeylfa
|
||||||
|
dphcuisijnjzxwkbgdtqeoylfa
|
||||||
|
mihvuisvrqjzxwkbgdtqeoylfa
|
||||||
|
mphcuisrrnvzxwkbgdtqeodlfa
|
||||||
|
mphtuisdrnjzxskbgdtqeoylfa
|
||||||
|
mphcutmvsnjzxwkbgdtqeoylfa
|
||||||
|
mphcunsvrnjzswkggdtqeoylfa
|
||||||
|
mphcuisvrwjzxwkbpdtqeoylfr
|
||||||
|
mphcujsdrnjzxwkbgdtqeovlfa
|
||||||
|
mpfcuisvrdjzxwkbgdtteoylfa
|
||||||
|
mppcuisvrpjzxwkbgdtqeoywfa
|
||||||
|
mphcuisvrnjzxwkbfptqroylfa
|
||||||
|
mphcuisvrnjzxwkbgstoeoysfa
|
||||||
|
mphcufsvrnjzcwkbgdeqeoylfa
|
||||||
|
mphcuissrnjzxwkbgdkquoylfa
|
||||||
|
sphcuxsvrnjzxwkbgdtqioylfa
|
||||||
|
mphcuiivrhjzxwkbgdtqevylfa
|
||||||
|
echcuisvrnjzxwkbgltqeoylfa
|
||||||
|
mphcuisvrljexwkbvdtqeoylfa
|
||||||
|
mpjcuisvrnjzxwkhidtqeoylfa
|
||||||
|
mphcuisvrfjzmwkbgdtqeoylfl
|
||||||
|
mwhcuisvrnjzxwkbgdtqeoytfm
|
||||||
|
mphcuisvrsjzxwkbgdaqeoylfh
|
||||||
|
mohcuisvrnjzxwkbgdtqtoymfa
|
||||||
|
maycuisvrnjzxwkbgdtqboylfa
|
||||||
|
pphcuisvqnjzxwkbgdtqeoylfd
|
||||||
|
mprcuisvrnjtxwmbgdtqeoylfa
|
||||||
|
mfhcuisgrnjzxckbgdtqeoylfa
|
||||||
|
mphiubsvrnjzxwkbgdtqeoyufa
|
||||||
|
dphctisvrnjzxwkbgdtqeoylfk
|
||||||
|
mphcuisvrnjznwksgdtqeoyzfa
|
||||||
|
mpwcuisvrnjziwkbgdtqaoylfa
|
||||||
|
mphduzsvrnjznwkbgdtqeoylfa
|
||||||
|
mphccisvrnjzxwebgdtqeoylqa
|
||||||
|
xphcuisvrnjzxwkfvdtqeoylfa
|
||||||
|
mphcupsvrnjzxwkbgdtfeoylpa
|
||||||
|
mphcuisvrtjzjwkbgdtqeoylfe
|
||||||
|
mpbcuisvrnjzxwkbgdmieoylfa
|
||||||
|
mphcuisvrnjzxwkbgjtqetylaa
|
||||||
|
mphcuisvrnjzxwpbgdtgdoylfa
|
||||||
|
ophcufsvrqjzxwkbgdtqeoylfa
|
||||||
|
iphcuhsvrnjzxwkbgetqeoylfa
|
||||||
|
mphcuisvunjzxwwbgdtqeoylqa
|
||||||
|
mphcpisvrnjzowkbgdtveoylfa
|
||||||
|
mphcuisvrnjzxhkbgdtqeotlla
|
||||||
|
mphcuisvrnjzxwkbodtgeoylha
|
||||||
|
mphcuisvrjjzxwkbwdtqtoylfa
|
||||||
|
mphcwisvrnjnxwkbgjtqeoylfa
|
||||||
|
mplcuicqrnjzxwkbgdtqeoylfa
|
||||||
|
mphcuisvrnjzxydbgdtqeoylfn
|
||||||
|
ophckisvrnjzxwkbgdtqeozlfa
|
||||||
|
mphcuisvrkjzxwkbgdtteoblfa
|
||||||
|
yphcuisvrnjcxwkbggtqeoylfa
|
||||||
|
mphcuisvrnazxwfbqdtqeoylfa
|
||||||
|
mphcuisvrmjzxwkbgdtlwoylfa
|
||||||
|
mphctksvrnjzxwibgdtqeoylfa
|
||||||
|
mphcuisprnjzxlebgdtqeoylfa
|
||||||
|
mphcuisnrnjzxakbgdtueoylfa
|
||||||
|
mphcuiavrnjoxwtbgdtqeoylfa
|
||||||
|
nphcuisvrnjzxwkbgdtqzoylfk
|
||||||
|
mphcuisrrnjmxwkbgdtqdoylfa
|
||||||
|
mphcuisvrujzxwkvgdtqehylfa
|
||||||
|
mphcuisvrnfzxwkogdtqebylfa
|
||||||
|
mphcuisvrnjwdwkbgdtqeoyxfa
|
||||||
|
mphcuisvrntzxwkrgxtqeoylfa
|
||||||
|
mpzcuisvrnjzxwebgdtqeoylsa
|
||||||
|
aphcuikvrnjzxwwbgdtqeoylfa
|
||||||
|
mphcqisvrnjzxwkpgdtqeoelfa
|
||||||
|
mphcuusvrnjzxwkbgdtjeodlfa
|
||||||
|
mphcuisvrnjzewkbgdtteoylza
|
||||||
|
mphcuisvanjzxwkbgdtheoylfc
|
||||||
|
mphcjishrnjzxwkbgltqeoylfa
|
||||||
|
mpxcuislrnjzxwkbgdtqeoynfa
|
||||||
|
mphcuisvrnjjxwkbgdtmeoxlfa
|
||||||
|
mphcimsvrnjzxwkbsdtqeoylfa
|
||||||
|
mphcxisvcnjzxwjbgdtqeoylfa
|
||||||
|
mphcuisbrvjzxwkbgdtqeoymfa
|
||||||
|
mplcuisvrnjzxwkbgdtaenylfa
|
||||||
|
mphcuihvrnjzxwkygytqeoylfa
|
||||||
|
mphcbisvrnjzxhkbgdtqezylfa
|
||||||
|
mphcuisarnjzxwkbgatqeoylfv
|
||||||
|
mphcumsvrnjzxwkbgdrqebylfa
|
||||||
|
mlhcuisvrnwzxwkbgdtqeoylfx
|
||||||
|
mpkcuisvrkjzxwkbgdtqeoylfo
|
||||||
|
mphcuissrnjzxwkbgdtqmoylfc
|
||||||
|
mphcuiwvrnjuxwkfgdtqeoylfa
|
||||||
|
mphcuicvlnjzxwkbgdvqeoylfa
|
||||||
|
mphcuisvrvvzxwkbfdtqeoylfa
|
||||||
|
myhcuisvrnjpxwkbgntqeoylfa
|
||||||
|
mpocuisvrnjzxwtbgitqeoylfa
|
||||||
|
mphcuisvrnjzxwkbgdtwewyqfa
|
||||||
|
mphcuisvtnjzxwwbgdtqeoolfa
|
||||||
|
mphcuisvrnjzxgkbgdyqeoyyfa
|
||||||
|
mphcuisvrdjzxwkbgpyqeoylfa
|
||||||
|
bphcuisvrnjzxwkbgxtqefylfa
|
||||||
|
sphcuisvrdjzxwktgdtqeoylfa
|
||||||
|
mphcuvsvrnjmxwobgdtqeoylfa
|
||||||
|
mphcuisvrnjzxwkbsdtqeuylfb
|
||||||
|
mnhcmisvynjzxwkbgdtqeoylfa
|
||||||
|
mphckisvrnjzxwkhgdkqeoylfa
|
||||||
|
mpacuisvrnjzxwkbgdtqeoolaa
|
||||||
|
mpgcuisvrnjzxwkbzdtqeoynfa
|
||||||
|
mphcuisvrojzxwkbzdtqeoylga
|
||||||
|
mphcuisvknjfxwkbydtqeoylfa
|
||||||
|
mphcuistrnjzxwkbgdqqeuylfa
|
||||||
|
bpvcuiszrnjzxwkbgdtqeoylfa
|
||||||
|
mphcuxsvrnjzswkbgdtqeoelfa
|
||||||
|
mphcuisvbnjzxwlbgdtqeoylla
|
||||||
|
mphcuisvonczxwkbgktqeoylfa
|
||||||
|
mphcuisvrnkzxwvbgdtquoylfa
|
||||||
|
mphcuisvrnjzxokfgdtqeoylia
|
||||||
|
tphcuisvrnjzxwkbjdwqeoylfa
|
||||||
|
mihcuisvrnjzpwibgdtqeoylfa
|
||||||
|
mphcuisvrejzxwkbgdtqjuylfa
|
||||||
|
mprcuisvrnjixwkxgdtqeoylfa
|
||||||
|
mpqcuiszrnjzxwkbgdtqeodlfa
|
||||||
|
mphcuasvrnjzzakbgdtqeoylva
|
||||||
|
mphcuisvrnjzmwkbtdtqeoycfa
|
||||||
|
mphcuisvrnjzxwkbcdtqioylxa
|
||||||
|
mphckisvrnjzxwkbcdtqeoylfm
|
||||||
|
mphcuisvrnjuxwbogdtqeoylfa
|
||||||
|
mphcuisdrnjzxwkbldtqeoylfx
|
||||||
|
mphcuisvrnjoxwkbgdtqeyyyfa
|
||||||
|
mphcuicvqnjzxwkbgdtqeoylna
|
||||||
|
mpmcuisvrnjzxwkbgdtqktylfa
|
||||||
|
mphcuisvrnqzxwkggdtqeoykfa
|
||||||
|
mphcuisvryjzxwkbydtqejylfa
|
||||||
|
mphcugsvrnjzxwkbghtqeeylfa
|
||||||
|
rphcuusvrnjzxwkwgdtqeoylfa
|
||||||
|
zphwuiyvrnjzxwkbgdtqeoylfa
|
||||||
|
cphcuivvrnjzxwkbgdtqenylfa
|
||||||
|
mphcuisvrnjzxwkagotqevylfa
|
||||||
|
mprcuisvrcjzxwkbgdtqeoytfa
|
||||||
|
mphjugsvrnezxwkbgdtqeoylfa
|
||||||
|
mphcuisvryjzxwkbgltqeoylaa
|
||||||
|
mphcursvrnjzxfkbgdtqeoydfa
|
||||||
|
mphcuisvrcuzxwkbgdtqeoylfw
|
||||||
|
mphcuisvrijzxwkbgdtqeoelfh
|
||||||
|
xphcuisvenjzxjkbgdtqeoylfa
|
||||||
|
mphcuisvrnazxwkbgdeqeoylaa
|
||||||
|
mphcuisbrsjzxwkbgdtqeoygfa
|
||||||
|
mlhvuisvrnjzxwkbgdtqeoylfh
|
||||||
|
mphcuisvrnjzxukbgdtqeoyhfy
|
||||||
|
mpzcuilvrnjzawkbgdtqeoylfa
|
||||||
|
hphcuisjfnjzxwkbgdtqeoylfa
|
||||||
|
mahcuisvrnjzxwkegdtqeoylfi
|
||||||
|
mphcuixvrnjzcwkbgdtqetylfa
|
||||||
|
mphcuisvrnjzxwkdgdtqeoklfj
|
||||||
|
mlhcuisvrnjzxwkbgdteeoylka
|
||||||
|
mphcuifvrnjbxwkrgdtqeoylfa
|
||||||
|
mphcuasvrnjzzwkbgdtqeoylva
|
||||||
|
mphcuisvrnjzxwkboutqeoylba
|
||||||
|
mbhcuisvcnjzxwklgdtqeoylfa
|
||||||
|
mpbcuisvrnjzxgkbgdtqesylfa
|
||||||
|
mphcuisvrnjfswkbgdtqeoylfd
|
||||||
|
mphcuisvrnjzxwkbgdoweoysfa
|
||||||
|
uphcuisvrnjzrwkbgdtqelylfa
|
||||||
|
mphcuisvrnjzxwkbgdtqyoylsi
|
||||||
|
mpqcuiqvxnjzxwkbgdtqeoylfa
|
||||||
|
mphcuisorfjzxwkbgatqeoylfa
|
||||||
|
mphcuisvrntfxwkbzdtqeoylfa
|
||||||
|
mphcuisvrnrzxwkbgdtueoylfl
|
||||||
|
mphcuisvrnjzewkagdtyeoylfa
|
||||||
|
mpocuisdrnjzxwkbgdtqeozlfa
|
||||||
|
mphcuisvrnjjxwkbgdtoeoylfm
|
||||||
|
mphcuisvenjzxwkbgdtqwoylza
|
||||||
|
mpmcuisvrnjzxwkbgdtqeoxlfr
|
||||||
|
mphcuisvgnjhxwkbgdtqeoplfa
|
||||||
|
mphcuisvrnjzowkdgdtqeoyyfa
|
||||||
|
mphcuisqynjzxwkbgdtqeoylda
|
||||||
|
hphcuisvgnjzxwkbgdtbeoylfa
|
||||||
|
iphcuipvrnuzxwkbgdtqeoylfa
|
||||||
|
mphcuisvrnjzsikbpdtqeoylfa
|
||||||
|
mpwcuhsvrnjzxbkbgdtqeoylfa
|
||||||
|
mnhjuisvcnjzxwkbgdtqeoylfa
|
||||||
|
mphcudsvrnjzxwkbgdtqloilfa
|
||||||
|
mpncuiwvrwjzxwkbgdtqeoylfa
|
||||||
|
mphcuisvrnjgawkbgdtqeoylya
|
||||||
|
mphcuisvrnjzxwkbggtteoslfa
|
||||||
|
mphcuisvrnjzxwkbgdvqeoylpe
|
||||||
|
mphcuisvrnczxfkbgktqeoylfa
|
||||||
|
mphcuifvrnjzxwkbgdbmeoylfa
|
||||||
|
mphcuisvrnjytwkbgdtqeoylla
|
||||||
|
mphcuisvrnjzxwkbgdtjeoxlfn
|
||||||
|
mphjuisvrnjzxwkbghtqeoyffa
|
||||||
|
mphcuisvrnjzxkrbgdtqeoylaa
|
||||||
|
mphcbisvrnjzxwkbgttqeoylfs
|
||||||
|
mphkuksvbnjzxwkbgdtqeoylfa
|
||||||
|
nphcuidvrnjzxwhbgdtqeoylfa
|
||||||
|
mphguzsvrnjzxwkbgdaqeoylfa
|
||||||
|
mihcuisfrnjzxwkbgdtqhoylfa
|
||||||
|
mphcuisvrnrzxwpbgdtqesylfa
|
||||||
|
zphcuisvrnjzxwkbddtqeoylaa
|
||||||
|
mphcuigvmnjzxwkbgdtqeoylba
|
||||||
|
mjhcuisvrnjzxjkbgdtqeoylha
|
||||||
|
mphnuisvrnjznwkbgdtqnoylfa
|
||||||
|
mkhcuisvrnjcxwkbgdqqeoylfa
|
||||||
|
mphcuisvenjzxwbbqdtqeoylfa
|
||||||
|
qphcuisnrnjzawkbgdtqeoylfa
|
||||||
|
mphcuisvrdjzxwkbgdtqeoywca
|
||||||
|
mphcuzsvvnjzxwfbgdtqeoylfa
|
||||||
|
pphcuxsvrnjzxwkbgdtmeoylfa
|
||||||
|
mphiuvsvrnjzxlkbgdtqeoylfa
|
||||||
|
mphlqisvrnjzxkkbgdtqeoylfa
|
||||||
|
mmhcuisvrnjzxwkbgatqeoylea
|
||||||
|
mphduisrrnjoxwkbgdtqeoylfa
|
||||||
|
mphcuisvrnjnxwkvgdyqeoylfa
|
||||||
|
mphcuvsvrnjzxgkbgdtqeoylfz
|
||||||
|
mphcuisvryjzxwkbggtqkoylfa
|
||||||
|
iphcuisvrdjzxwkbgotqeoylfa
|
||||||
|
mphcuisvrnjzxwhbgdtqwoyofa
|
||||||
|
mphcorbvrnjzxwkbgdtqeoylfa
|
||||||
|
mghcuisvrnpzxykbgdtqeoylfa
|
||||||
|
mphauisvrnjnxwkbzdtqeoylfa
|
||||||
|
mphcgisvrnjzxwkwgdtqeoygfa
|
||||||
|
mphcuisvrnjzxwkggotqeoylba
|
||||||
|
mphcuesvrnjzxwkbgdwqebylfa
|
||||||
|
yphcuisvrnjzxwkbgdxqeoylja
|
||||||
|
ephyuisvrnjzywkbgdtqeoylfa
|
||||||
|
mfhcuisqrnjzxwkbgdlqeoylfa
|
||||||
|
mphkuisvrnjzxwkbertqeoylfa
|
||||||
|
mphcuusgrnjzxwkbggtqeoylfa
|
||||||
|
mphcuildrnjvxwkbgdtqeoylfa
|
||||||
|
mphcuiuvrnjzlwkbgwtqeoylfa
|
||||||
|
mppcuisvrljzxwkbgdtqeoylfw
|
||||||
|
mphcwiwvrnjzxwsbgdtqeoylfa
|
||||||
|
mphcubivrnjzxwkqgdtqeoylfa
|
||||||
|
mphcuisvrnjpxwkngdtqeoylpa
|
||||||
|
pchcuisvrgjzxwkbgdtqeoylfa
|
||||||
|
mphcuisvlnjzxwkbgdtmeoylfw
|
||||||
|
mphcuisvrnjzywkbgdvqeoylfj
|
||||||
|
mpzcuisvrnezxwktgdtqeoylfa
|
||||||
|
mphcuisvrnjbxwkbgzrqeoylfa
|
||||||
|
mphcuisvrnjzxwktgdtqeodtfa
|
||||||
|
jphcuiavrnjzxwkbgdtqeoylfv
|
||||||
|
mphcuisvrnjzxwkbddppeoylfa
|
||||||
|
mphcuissrkjzxwkbgxtqeoylfa
|
||||||
|
mphcuisvrhjzxwxbgdtqeoylxa
|
||||||
|
mphcvisvgnjjxwkbgdtqeoylfa
|
||||||
|
mphcuisprnjwxwtbgdtqeoylfa
|
||||||
|
mphcuissrnjzxqkbgdtqeoymfa
|
||||||
|
mphcuiabrnjzxokbgdtqeoylfa
|
||||||
|
mphcuisvrnczxwkbgmtpeoylfa
|
||||||
@@ -0,0 +1,4 @@
|
|||||||
|
aabcdefghijklmnopqrstuvwxy
|
||||||
|
abcdefgbhijklmnopbqrstuvwx
|
||||||
|
abcdeygbhijklmnopbqrstuvwx
|
||||||
|
abcdeygbhijhfdsnopbqrstuvw
|
||||||
@@ -0,0 +1,48 @@
|
|||||||
|
// AdventOfCode2018-02
|
||||||
|
|
||||||
|
var twiceCounter = 0;
|
||||||
|
var thriceCounter = 0;
|
||||||
|
|
||||||
|
// Import the input file
|
||||||
|
var fs = require('fs');
|
||||||
|
var frequency = 0;
|
||||||
|
|
||||||
|
var textFile = fs.readFileSync('./input.txt').toString();
|
||||||
|
var textArray = textFile.split(/\r?\n/);
|
||||||
|
|
||||||
|
// For each line of the input file
|
||||||
|
textArray.forEach(line => {
|
||||||
|
var searchCharHistory = [];
|
||||||
|
var lineTwiceCounter = 0;
|
||||||
|
var lineThriceCounter = 0;
|
||||||
|
for (i = 0; i < line.length; i++) {
|
||||||
|
searchChar = line.charAt(i);
|
||||||
|
if (!searchCharHistory.indexOf(searchChar) >= 0) {
|
||||||
|
// If we haven't already counted this letter
|
||||||
|
//console.log('Searching for ' + searchChar + ' in line ' + line);
|
||||||
|
var re = new RegExp(searchChar, 'g');
|
||||||
|
var matchCharCount = (line.match(re) || []).length;
|
||||||
|
//console.log(matchCharCount);
|
||||||
|
// Check if a letter appears twice (and increment the counter)
|
||||||
|
if (matchCharCount == 2) {
|
||||||
|
lineTwiceCounter += 1;
|
||||||
|
}
|
||||||
|
// Check if a letter appears three times (and increment the counter)
|
||||||
|
else if (matchCharCount == 3) {
|
||||||
|
lineThriceCounter += 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
searchCharHistory.push(searchChar);
|
||||||
|
}
|
||||||
|
if (lineTwiceCounter > 0) {
|
||||||
|
twiceCounter += 1;
|
||||||
|
}
|
||||||
|
if (lineThriceCounter > 0) {
|
||||||
|
thriceCounter += 1;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
console.log(twiceCounter);
|
||||||
|
console.log(thriceCounter);
|
||||||
|
// multiply the two counters together
|
||||||
|
console.log('The checksum is ' + (twiceCounter * thriceCounter));
|
||||||
@@ -0,0 +1,63 @@
|
|||||||
|
// AdventOfCode2018-02
|
||||||
|
|
||||||
|
var twiceCounter = 0;
|
||||||
|
var thriceCounter = 0;
|
||||||
|
|
||||||
|
// Import the input file
|
||||||
|
var fs = require('fs');
|
||||||
|
var frequency = 0;
|
||||||
|
|
||||||
|
var textFile = fs.readFileSync('./input.txt').toString();
|
||||||
|
var textArray = textFile.split(/\r?\n/);
|
||||||
|
|
||||||
|
function compareStrings (string1, string2) {
|
||||||
|
if (string1 == string2) {
|
||||||
|
// Do nothing, it's the same string
|
||||||
|
}
|
||||||
|
|
||||||
|
// Split the characters of both strings into arrays
|
||||||
|
var arr1 = [];
|
||||||
|
var arr2 = [];
|
||||||
|
for (ii = 0; ii < string1.length; ii++) {
|
||||||
|
arr1.push(string1.charAt(ii));
|
||||||
|
}
|
||||||
|
for (jj = 0; jj < string2.length; jj++) {
|
||||||
|
arr2.push(string2.charAt(jj));
|
||||||
|
}
|
||||||
|
|
||||||
|
var wrongCharCounter = 0;
|
||||||
|
var sameChars = [];
|
||||||
|
// For each letter in the first array, check if it corresponds to the appropriate letter in the second array
|
||||||
|
for (kk = 0; kk < arr1.length; kk++) {
|
||||||
|
if (arr1[kk] != arr2[kk]) {
|
||||||
|
wrongCharCounter += 1;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
sameChars.push(arr1[kk]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (wrongCharCounter == 1) {
|
||||||
|
var re = new RegExp(',', 'g');
|
||||||
|
console.log('Common letters are: ' + sameChars.toString().replace(re, ''));
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
var endLoop = false;
|
||||||
|
// For each line of the input file
|
||||||
|
for (i = 0; i < textArray.length; i++) {
|
||||||
|
// Compare this line with each other line in the array
|
||||||
|
for (j = 0; j < textArray.length; j++) {
|
||||||
|
if (compareStrings(textArray[i],textArray[j])) {
|
||||||
|
// If it finds a string with just one letter wrong
|
||||||
|
endLoop = true;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (endLoop) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
};
|
||||||
Reference in New Issue
Block a user