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feat(2023-05): Add day 5 part 2 final answer

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Josh Creek
2023-12-07 19:09:26 +00:00
parent 36d2ed98e5
commit 544865484c
1 changed files with 15 additions and 13 deletions
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AdventOfCode/AOC.Tests/Y2023/Day05.cs
+15 -13
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@@ -1,5 +1,3 @@
using Microsoft.Data.Sqlite;
namespace AOC.Tests.Y2023; namespace AOC.Tests.Y2023;
[TestFixture] [TestFixture]
@@ -192,7 +190,7 @@ temperature-to-humidity map:
humidity-to-location map: humidity-to-location map:
60 56 37 60 56 37
56 93 4", 46)] 56 93 4", 46)]
[TestCase(null, 1783)] // The actual answer [TestCase(null, 63179500)] // The actual answer
public void Part2(string input, int? expected) public void Part2(string input, int? expected)
{ {
string[] lines = input != null ? input.Split("\n") : realData; string[] lines = input != null ? input.Split("\n") : realData;
@@ -207,13 +205,15 @@ humidity-to-location map:
almanac.TemperatureToHumidityMap = GetMap(lines, "temperature-to-humidity map:"); almanac.TemperatureToHumidityMap = GetMap(lines, "temperature-to-humidity map:");
almanac.HumidityToLocationMap = GetMap(lines, "humidity-to-location map:"); almanac.HumidityToLocationMap = GetMap(lines, "humidity-to-location map:");
List<long> locations = new(); long result = long.MaxValue;
object lockObj = new();
List<long> values = lines[0].Split(": ")[1].Split(" ").Select(long.Parse).ToList(); List<long> values = lines[0].Split(": ")[1].Split(" ").Select(long.Parse).ToList();
for (int i = 0; i < values.Count; i += 2)
Parallel.For(0, values.Count / 2, i =>
{ {
long startRange = values[i]; long startRange = values[i * 2];
long rangeLength = values[i + 1]; long rangeLength = values[i * 2 + 1];
for (long seed = startRange; seed < startRange + rangeLength; seed++) for (long seed = startRange; seed < startRange + rangeLength; seed++)
{ {
@@ -226,13 +226,15 @@ humidity-to-location map:
long humidity = GetValueUsingMaps(almanac.TemperatureToHumidityMap, temperature); long humidity = GetValueUsingMaps(almanac.TemperatureToHumidityMap, temperature);
long location = GetValueUsingMaps(almanac.HumidityToLocationMap, humidity); long location = GetValueUsingMaps(almanac.HumidityToLocationMap, humidity);
// Console.WriteLine( lock (lockObj)
// $"Seed {seed} corresponds to soil {soil}, fertiliser {fertiliser}, water {water}, light {light}, temperature {temperature}, humidity {humidity}, and location {location}"); {
locations.Add(location); if (location < result)
{
result = location;
}
}
} }
} });
long result = locations.Min();
if (expected != null) if (expected != null)
{ {