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Day 01 solution

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Josh Creek
2019-10-14 09:58:04 +01:00
parent 1babd20a68
commit 181b10451b
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2018/Day 01/Day 01.csproj
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp2.2</TargetFramework>
<RootNamespace>Day_01</RootNamespace>
</PropertyGroup>
</Project>
2018/Day 01/Program.cs
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using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
namespace Day_01
{
class Program
{
static void Main(string[] args)
{
//Part1();
Part2();
}
static void Part1()
{
var frequency = 0;
var lines = File.ReadAllLines("input.txt");
foreach (var line in lines)
{
if (line.Substring(0,1) == "+")
{
frequency += Int32.Parse(line.Substring(1));
}
else
{
frequency -= Int32.Parse(line.Substring(1));
}
}
Console.WriteLine("Part 1: The resulting frequency is " + frequency);
}
static void Part2()
{
int frequency = 0;
List<int> frequencyHistory = new List<int>();
int loopCount = 0;
bool foundDuplicate = false;
var lines = File.ReadAllLines("input.txt");
while (!foundDuplicate) {
foreach (var line in lines)
{
if (line.Substring(0,1) == "+")
{
frequency += Int32.Parse(line.Substring(1));
}
else
{
frequency -= Int32.Parse(line.Substring(1));
}
if (frequencyHistory.Contains(frequency)) {
Console.WriteLine("The first repeated frequency is " + frequency);
foundDuplicate = true;
break;
}
else {
frequencyHistory.Add(frequency);
}
}
loopCount += 1;
}
Console.WriteLine("The loop count is " + loopCount);
}
}
}
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