Add Day10 implementation with puzzle-solving logic and tests

This commit is contained in:
Sebastian Lindemeier 2025-12-11 06:02:07 +01:00
parent 82772fd4e0
commit 6621a36021
3 changed files with 150 additions and 1 deletions

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@ -4,7 +4,7 @@ using System.Globalization;
using AoC_2025;
var rootPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
var day01 = new Day01();
/*var day01 = new Day01();
string day01Path = @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day01.txt";
Console.WriteLine(day01.SolvePart1(day01Path));
Console.WriteLine(day01.SolvePart2(day01Path));
@ -56,4 +56,10 @@ var day09 = new Day09();
string day09Path = @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day09.txt";
Console.WriteLine(day09.SolvePart1(day09Path));
Console.WriteLine(day09.SolvePart2(day09Path));
Console.WriteLine();*/
var day10 = new Day10();
string day10Path = @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day10.txt";
Console.WriteLine(day10.SolvePart1(day10Path));
Console.WriteLine(day10.SolvePart2(day10Path));
Console.WriteLine();

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@ -0,0 +1,47 @@
using AdvenOfCode.Contracts;
namespace AoC_2025.Tests;
public class Day10Test
{
private IPuzzleSolver<long> _sut;
private static readonly string rootPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
private readonly string TestInputPath = @$"{rootPath}\AoC-PuzzleInputs\2025\Test\day10.txt";
private readonly string ProdInputPath = @$"{rootPath}\AoC-PuzzleInputs\2025\Prod\day10.txt";
public Day10Test()
{
_sut = new Day10();
}
[Fact]
public void Part01_Test_equals_7()
{
var actual = _sut.SolvePart1(TestInputPath);
Assert.Equal(7, actual);
}
[Fact]
public void Part01_Prod_equals_500()
{
var actual = _sut.SolvePart1(ProdInputPath);
Assert.Equal(500, actual);
}
[Fact]
public void Part02_Test_equals_24()
{
var actual = _sut.SolvePart2(TestInputPath);
Assert.Equal(24, actual);
}
[Fact]
public void Part02_Prod_equals_1568849600()
{
var actual = _sut.SolvePart2(ProdInputPath);
Assert.Equal(1568849600, actual);
}
}

96
AoC_2025/Day10.cs Normal file
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@ -0,0 +1,96 @@
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using System.IO;
using System.Linq;
using AdvenOfCode.Contracts;
namespace AoC_2025;
public class Day10 : IPuzzleSolver<long>
{
private static int done = 0;
private (uint lamps, uint[] buttons, int[] joltages)[] ParsePuzzleInput(string path)
{
var puzzleInput = File.ReadAllLines(path)
.Where(line => !string.IsNullOrWhiteSpace(line))
.Select(line => line.Split(' ', StringSplitOptions.RemoveEmptyEntries))
.Select(instruction => instruction switch
{
[var lamps, ..var buttons, var joltages] => (lamps: lamps[1..^1], buttons, joltages: joltages[1..^1]),
_ => throw new DataException("Misaligned data")
})
.OrderBy(inst => inst.lamps.Length)
.ToArray();
var lamps = puzzleInput
.Select(input => input.lamps)
.Select(lamps => lamps.Index())
.Select(ixlamps =>
ixlamps.Aggregate((uint)0L, (acc, ixLamp) => acc | ((uint)(ixLamp.Item == '#' ? 1L : 0L) << ixLamp.Index)))
.ToArray();
var buttons = puzzleInput
.Select(input => input.buttons)
.Select(buttons => buttons
.Select(button => button[1..^1]
.Split(',', StringSplitOptions.RemoveEmptyEntries)
.Select(lampIndex => int.Parse(lampIndex))
.Aggregate((uint)0L, (acc, lampIndex) => acc | ((uint)1 << lampIndex)))
.ToArray())
.ToArray();
var joltages = puzzleInput
.Select(input => input.joltages)
.Select(joltage => joltage
.Split(',', StringSplitOptions.RemoveEmptyEntries)
.Select(jolt => int.Parse(jolt))
.ToArray())
.ToArray();
var res = lamps
.Zip(buttons, (lamp, button) => (lamp, button))
.Zip(joltages, (bl, joltage) => (bl.lamp, bl.button, joltage))
.ToArray();
return res;
}
public long SolvePart1(string pathToPuzzleInput)
{
var instructions = ParsePuzzleInput(pathToPuzzleInput);
Console.WriteLine($"total: {instructions.Length}");
var minCounts = instructions
.Select(ins => GetMinCountButtonPressesForLamps(ins.lamps, ins.buttons))
.ToArray();
return minCounts.Sum();
}
public long SolvePart2(string pathToPuzzleInput)
{
return 0;
}
private static long GetMinCountButtonPressesForLamps(uint lamps, uint[] buttons)
{
var presses = 0L;
HashSet<uint> lampStates = [lamps];
while (lampStates.All(state => state > 0) && presses < 100)
{
lampStates = lampStates
.Select(lampState => GetLampStates(lampState, buttons))
.Aggregate((current, states) => [..current,..states])
.ToHashSet();
presses++;
}
var amount = Interlocked.Increment(ref done);
Console.WriteLine($"done: {amount}, presses: {presses}");
return presses;
}
private static uint[] GetLampStates(uint lampState, uint[] buttons)
{
var states = buttons
.Where(button => (lampState & button) > 0)
.Select(button => lampState ^ button);
return [..states];
}
}