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feat: solved day 2 part 1...part 2 is WIP

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This commit is contained in:
Stevan Freeborn
2024-12-03 02:32:30 -06:00
parent 17f6c01170
commit 60b5c726cf
10 changed files with 340 additions and 1 deletions
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.vscode/launch.json
Vendored
+15 -1
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@@ -2,7 +2,7 @@
"version": "0.2.0",
"configurations": [
{
"name": ".NET Core Launch (console)",
"name": "Day 1",
"type": "coreclr",
"request": "launch",
"preLaunchTask": "build",
@@ -14,6 +14,20 @@
"console": "integratedTerminal",
"stopAtEntry": false
},
{
"name": "Day 2",
"type": "coreclr",
"request": "launch",
"preLaunchTask": "build",
"program": "${workspaceFolder}/02/RedNosedReports/bin/Debug/net9.0/RedNosedReports.dll",
"args": [
"${input:inputFilePath}",
"part2"
],
"cwd": "${workspaceFolder}/02/RedNosedReports",
"console": "integratedTerminal",
"stopAtEntry": false
},
{
"name": ".NET Core Attach",
"type": "coreclr",
02/RedNosedReports.Tests/PuzzleParserTests.cs
+31
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@@ -0,0 +1,31 @@
namespace RedNosedReports.Tests;
public class PuzzleParserTests
{
private readonly PuzzleParser _puzzleParser = new();
[Test]
public async Task Parse_WhenGivenInput_ItShouldReturnListOfReports()
{
string[] input = [
"7 6 4 2 1",
"1 2 7 8 9",
"9 7 6 2 1",
"1 3 2 4 5",
"8 6 4 4 1",
"1 3 6 7 9",
];
var result = _puzzleParser.Parse(input);
await Assert.That(result).IsEquivalentTo(new List<Report>()
{
new([7, 6, 4, 2, 1]),
new([1, 2, 7, 8, 9]),
new([9, 7, 6, 2, 1]),
new([1, 3, 2, 4, 5]),
new([8, 6, 4, 4, 1]),
new([1, 3, 6, 7, 9]),
});
}
}
02/RedNosedReports.Tests/RedNosedReports.Tests.csproj
+19
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@@ -0,0 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net9.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<NoWarn>CA1822</NoWarn>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\RedNosedReports\RedNosedReports.csproj" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="TUnit" Version="0.4.45" />
</ItemGroup>
</Project>
02/RedNosedReports.Tests/ReportTests.cs
+102
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@@ -0,0 +1,102 @@
namespace RedNosedReports.Tests;
public class ReportTests
{
private readonly PuzzleParser _puzzleParser = new();
private async Task<List<Report>> GetPuzzleLists()
{
var inputPath = Path.Combine(AppContext.BaseDirectory, "INPUT.txt");
var input = await File.ReadAllLinesAsync(inputPath);
return _puzzleParser.Parse(input);
}
[Test]
public async Task IsSafe_WhenGivenPuzzleInput_ItShouldReturnExpectedCount()
{
var reports = await GetPuzzleLists();
var count = reports.Count(r => r.IsSafe());
await Assert.That(count).IsEqualTo(407);
}
[Test]
public async Task IsSafe_WhenAllLevelsAreNotDecreasing_ItShouldReturnFalse()
{
var report = new Report([7, 6, 9, 2, 1]);
await Assert.That(report.IsSafe()).IsEqualTo(false);
}
[Test]
public async Task IsSafe_WhenAllLevelsAreDecreasing_ItShouldReturnTrue()
{
var report = new Report([7, 6, 4, 2, 1]);
await Assert.That(report.IsSafe()).IsEqualTo(true);
}
[Test]
public async Task IsSafe_WhenAllLevelsAreNotIncreasing_ItShouldReturnFalse()
{
var report = new Report([1, 3, 6, 4, 9]);
await Assert.That(report.IsSafe()).IsEqualTo(false);
}
[Test]
public async Task IsSafe_WhenAllLevelsAreIncreasing_ItShouldReturnTrue()
{
var report = new Report([1, 3, 6, 7, 9]);
await Assert.That(report.IsSafe()).IsEqualTo(true);
}
[Test]
public async Task IsSafe_WhenTheChangeIsTooLarge_ItShouldReturnFalse()
{
var report = new Report([1, 2, 7, 8, 9]);
await Assert.That(report.IsSafe()).IsEqualTo(false);
}
[Test]
public async Task IsSafe_WhenTheChangeIsTooSmall_ItShouldReturnFalse()
{
var report = new Report([8, 6, 4, 4, 1]);
await Assert.That(report.IsSafe()).IsEqualTo(false);
}
[Test]
public async Task IsSafeWithProblemDampener_WhenSafeByRemovingOneLevel_ItShouldReturnTrue()
{
var reportOne = new Report([1, 3, 2, 4, 5]);
var reportTwo = new Report([8, 6, 4, 4, 1]);
var reportThree = new Report([19, 21, 24, 27, 24]);
await Assert.That(reportOne.IsSafeWithProblemDampener()).IsEqualTo(true);
await Assert.That(reportTwo.IsSafeWithProblemDampener()).IsEqualTo(true);
await Assert.That(reportThree.IsSafeWithProblemDampener()).IsEqualTo(true);
}
[Test]
public async Task IsSafeWithProblemDampener_WhenSafeByRemovingNoLevels_ItShouldReturnTrue()
{
var reportOne = new Report([7, 6, 4, 2, 1]);
var reportTwo = new Report([1, 3, 6, 7, 9]);
await Assert.That(reportOne.IsSafeWithProblemDampener()).IsEqualTo(true);
await Assert.That(reportTwo.IsSafeWithProblemDampener()).IsEqualTo(true);
}
[Test]
public async Task IsSafeWithProblemDampener_WhenUnsafeRegardlessOfLevelsRemoved_ItShouldReturnFalse()
{
var reportOne = new Report([1, 2, 7, 8, 9]);
var reportTwo = new Report([9, 7, 6, 2, 1]);
await Assert.That(reportOne.IsSafeWithProblemDampener()).IsEqualTo(false);
await Assert.That(reportTwo.IsSafeWithProblemDampener()).IsEqualTo(false);
}
}
02/RedNosedReports/Direction.cs
+8
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@@ -0,0 +1,8 @@
namespace RedNosedReports;
static class Direction
{
public const string Unknown = "Unknown";
public const string Increasing = "Increasing";
public const string Decreasing = "Decreasing";
}
02/RedNosedReports/Program.cs
+30
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@@ -0,0 +1,30 @@
using System.Diagnostics;
using RedNosedReports;
if (args.Length is 0)
{
Console.WriteLine("Please provide a path to the input file.");
return;
}
if (File.Exists(args[0]) is false)
{
Console.WriteLine("The provided file does not exist.");
return;
}
var isPart2 = args.Length is 2 && args[1] is "part2";
var input = await File.ReadAllLinesAsync(args[0]);
var stopwatch = new Stopwatch();
stopwatch.Start();
var reports = new PuzzleParser().Parse(input);
var numberOfSafeReports = isPart2
? reports.Count(r => r.IsSafeWithProblemDampener())
: reports.Count(r => r.IsSafe());
stopwatch.Stop();
Console.WriteLine($"The total number of safe reports is {numberOfSafeReports}. ({stopwatch.ElapsedMilliseconds}ms)");
02/RedNosedReports/PuzzleParser.cs
+17
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@@ -0,0 +1,17 @@
namespace RedNosedReports;
class PuzzleParser
{
public List<Report> Parse(string[] lines)
{
var reports = new List<Report>();
foreach (var line in lines)
{
var numbers = line.Split(' ').Select(int.Parse).ToList();
reports.Add(new Report(numbers));
}
return reports;
}
}
02/RedNosedReports/RedNosedReports.csproj
+21
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@@ -0,0 +1,21 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net9.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<NoWarn>CA1822</NoWarn>
</PropertyGroup>
<ItemGroup>
<InternalsVisibleTo Include="$(AssemblyName).Tests" />
</ItemGroup>
<ItemGroup>
<Content Include="..\INPUT.txt">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
</Content>
</ItemGroup>
</Project>
02/RedNosedReports/Report.cs
+81
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@@ -0,0 +1,81 @@
namespace RedNosedReports;
class Report(List<int> levels)
{
private readonly List<int> _levels = levels;
public bool IsSafe()
{
for (var i = 0; i < _levels.Count - 1; i++)
{
if (CheckIfSafe(_levels[i], _levels[i + 1]) is false)
{
return false;
}
}
return true;
}
public bool IsSafeWithProblemDampener()
{
for (var currentIndex = 0; currentIndex < _levels.Count - 1; currentIndex++)
{
var nextIndex = currentIndex + 1;
var current = _levels[currentIndex];
var next = _levels[nextIndex];
if (CheckIfSafe(current, next) is false)
{
var levelsWithoutCurrent = _levels.ToList();
levelsWithoutCurrent.RemoveAt(currentIndex);
var isSafeWithoutCurrent = new Report(levelsWithoutCurrent).IsSafe();
if (isSafeWithoutCurrent)
{
return true;
}
var levelsWithoutNext = _levels.ToList();
levelsWithoutNext.RemoveAt(nextIndex);
var isSafeWithoutNext = new Report(levelsWithoutNext).IsSafe();
if (isSafeWithoutNext)
{
return true;
}
return false;
}
}
return true;
}
private bool CheckIfSafe(int current, int next)
{
var direction = _levels[1] > _levels[0]
? Direction.Increasing
: Direction.Decreasing;
var isNextGreaterThanCurrent = next > current;
var delta = Math.Abs(next - current);
if (delta > 3 || delta < 1)
{
return false;
}
if (direction is Direction.Increasing && isNextGreaterThanCurrent is false)
{
return false;
}
if (direction is Direction.Decreasing && isNextGreaterThanCurrent)
{
return false;
}
return true;
}
}
AdventOfCode2024.sln
+16
View File
@@ -9,6 +9,12 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HistorianHysteria", "01\His
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HistorianHysteria.Tests", "01\HistorianHysteria.Tests\HistorianHysteria.Tests.csproj", "{60DB12DB-3F63-4D9E-BA5A-ACEE0C9E1D05}"
EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "02", "02", "{F73AFAD4-FBCE-4A39-B69E-CDA1B3921902}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RedNosedReports", "02\RedNosedReports\RedNosedReports.csproj", "{C2904CE1-B31B-47E4-B1A3-E2EC30731179}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RedNosedReports.Tests", "02\RedNosedReports.Tests\RedNosedReports.Tests.csproj", "{8275EA3C-B88A-4719-866C-A5B49BD6B74E}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -26,9 +32,19 @@ Global
{60DB12DB-3F63-4D9E-BA5A-ACEE0C9E1D05}.Debug|Any CPU.Build.0 = Debug|Any CPU
{60DB12DB-3F63-4D9E-BA5A-ACEE0C9E1D05}.Release|Any CPU.ActiveCfg = Release|Any CPU
{60DB12DB-3F63-4D9E-BA5A-ACEE0C9E1D05}.Release|Any CPU.Build.0 = Release|Any CPU
{C2904CE1-B31B-47E4-B1A3-E2EC30731179}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{C2904CE1-B31B-47E4-B1A3-E2EC30731179}.Debug|Any CPU.Build.0 = Debug|Any CPU
{C2904CE1-B31B-47E4-B1A3-E2EC30731179}.Release|Any CPU.ActiveCfg = Release|Any CPU
{C2904CE1-B31B-47E4-B1A3-E2EC30731179}.Release|Any CPU.Build.0 = Release|Any CPU
{8275EA3C-B88A-4719-866C-A5B49BD6B74E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{8275EA3C-B88A-4719-866C-A5B49BD6B74E}.Debug|Any CPU.Build.0 = Debug|Any CPU
{8275EA3C-B88A-4719-866C-A5B49BD6B74E}.Release|Any CPU.ActiveCfg = Release|Any CPU
{8275EA3C-B88A-4719-866C-A5B49BD6B74E}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(NestedProjects) = preSolution
{1AFE2FF1-A55D-4D86-A9BB-9875CA0D14D8} = {270B7829-6D23-4B34-91FE-D87D533AF2AB}
{60DB12DB-3F63-4D9E-BA5A-ACEE0C9E1D05} = {270B7829-6D23-4B34-91FE-D87D533AF2AB}
{C2904CE1-B31B-47E4-B1A3-E2EC30731179} = {F73AFAD4-FBCE-4A39-B69E-CDA1B3921902}
{8275EA3C-B88A-4719-866C-A5B49BD6B74E} = {F73AFAD4-FBCE-4A39-B69E-CDA1B3921902}
EndGlobalSection
EndGlobal