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feat: add day 02 🎅
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‎README.md‎

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[![Linkedin](https://img.shields.io/badge/LinkedIn-0077B5?style=for-the-badge&logo=linkedin&logoColor=white)](https://www.linkedin.com/company/advent-of-craft)
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[![Youtube channel](https://camo.githubusercontent.com/94b947e758f767a15576edfb06cc06075d6b62ef7a8946db69c5ce4a2ee830f7/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f596f75547562652d4646303030303f7374796c653d666f722d7468652d6261646765266c6f676f3d796f7574756265266c6f676f436f6c6f723d7768697465)](https://www.youtube.com/@AdventOfCraft)
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6-
[![License](https://img.shields.io/github/license/advent-of-craft/2024.svg)](https://github.com/advent-of-craft/2024/blob/main/LICENSE) [![Days](https://img.shields.io/badge/%F0%9F%8E%85%20aoc%202024-day%2001-green)](https://github.com/advent-of-craft/2024)
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[![License](https://img.shields.io/github/license/advent-of-craft/2024.svg)](https://github.com/advent-of-craft/2024/blob/main/LICENSE) [![Days](https://img.shields.io/badge/%F0%9F%8E%85%20aoc%202024-day%2002-green)](https://github.com/advent-of-craft/2024)
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Join us on [`Discord`](https://discord.gg/E5Z9s9UKTS) and [`Linkedin`](https://www.linkedin.com/company/advent-of-craft) to follow the initiative.
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@@ -68,6 +68,7 @@ In this story, you have been working as a new consultant at `North Star Solution
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## Challenges
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- [Day 0: An encrypted email...](docs/day00/challenge.md)
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- [Day 1: Too many parameters...](docs/day01/challenge.md)
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- [Day 2: Extend the program.](docs/day02/challenge.md)
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### Solutions
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- [Day 0: An encrypted email...](docs/day00/solution/step-by-step.md)

‎docs/day02/challenge.md‎

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## Day 2: Extend the program.
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On the second day, it's apparently game day! 🎯
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A special horn startled you at breakfast and Teo sent you a note that they are starting the production of toys. 🎁📦
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Santa and the elves have a tradition and love to play together at `FizzBuzz` during production throughout the day.
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They find it a little bit too easy and would like to extend the rules of the game like this:
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- Multiples of 7 are `Whizz`
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- Multiples of 11 are `Bang`
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They would like to be able to configure the game from the outside as well. 🎮
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✅🚀 **Challenge: Make the game configurable and add new cases.** 🚀✅
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- <u>💡HINT:</u> how can the rules be outside of the class?
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![snippet of the day](snippet.webp)
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### Proposed Solution
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[![Proposed Solution Guide](../../img/proposed-solution.webp)](solution/step-by-step.md)

‎docs/day02/snippet.webp‎

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‎exercise/C#/day02/FizzBuzz.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 16
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VisualStudioVersion = 25.0.1700.0
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Games", "Games\Games.csproj", "{0C68A0B9-2D59-4DBC-A101-ADCA4986717E}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Games.Tests", "Games.Tests\Games.Tests.csproj", "{A96BFF3E-F3C9-49DA-8933-F3D885F2C544}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{0C68A0B9-2D59-4DBC-A101-ADCA4986717E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{0C68A0B9-2D59-4DBC-A101-ADCA4986717E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{0C68A0B9-2D59-4DBC-A101-ADCA4986717E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{0C68A0B9-2D59-4DBC-A101-ADCA4986717E}.Release|Any CPU.Build.0 = Release|Any CPU
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{A96BFF3E-F3C9-49DA-8933-F3D885F2C544}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{A96BFF3E-F3C9-49DA-8933-F3D885F2C544}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{A96BFF3E-F3C9-49DA-8933-F3D885F2C544}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{A96BFF3E-F3C9-49DA-8933-F3D885F2C544}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {7D9C35C9-81E4-4786-9E2C-F6E177082AAB}
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EndGlobalSection
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EndGlobal

‎exercise/C#/day02/Games.Tests/FizzBuzzTests.cs‎

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using FluentAssertions.LanguageExt;
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using FsCheck;
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using FsCheck.Xunit;
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using Xunit;
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namespace Games.Tests
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{
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public class FizzBuzzTests
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{
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private static readonly string[] FizzBuzzStrings = ["Fizz", "Buzz", "FizzBuzz"];
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[Theory]
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[InlineData(1, "1")]
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[InlineData(67, "67")]
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[InlineData(82, "82")]
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[InlineData(3, "Fizz")]
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[InlineData(66, "Fizz")]
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[InlineData(99, "Fizz")]
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[InlineData(5, "Buzz")]
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[InlineData(50, "Buzz")]
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[InlineData(85, "Buzz")]
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[InlineData(15, "FizzBuzz")]
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[InlineData(30, "FizzBuzz")]
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[InlineData(45, "FizzBuzz")]
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public void Returns_Number_Representation(int input, string expectedResult)
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=> Games.FizzBuzz.Convert(input)
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.Should()
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.BeSome(expectedResult);
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[Property]
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public Property Parse_Return_Valid_String_For_Numbers_Between_1_And_100()
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=> Prop.ForAll(
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ValidInput(),
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IsConvertValid
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);
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private static Arbitrary<int> ValidInput()
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=> Gen.Choose(FizzBuzz.Min, FizzBuzz.Max).ToArbitrary();
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private static bool IsConvertValid(int x)
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=> FizzBuzz.Convert(x).Exists(s => ValidStringsFor(x).Contains(s));
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private static IEnumerable<string> ValidStringsFor(int x)
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=> FizzBuzzStrings.Append(x.ToString());
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[Property]
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public Property ParseFailForNumbersOutOfRange()
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=> Prop.ForAll(
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InvalidInput(),
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x => FizzBuzz.Convert(x).IsNone
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);
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private static Arbitrary<int> InvalidInput()
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=> Gen.Choose(-10_000, 10_000)
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.ToArbitrary()
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.Filter(x => x is < FizzBuzz.Min or > FizzBuzz.Max);
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}
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}

‎exercise/C#/day02/Games.Tests/Games.Tests.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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<IsPackable>false</IsPackable>
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<IsTestProject>true</IsTestProject>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="FluentAssertions" Version="6.12.1" />
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<PackageReference Include="FluentAssertions.LanguageExt" Version="0.5.0"/>
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<PackageReference Include="FsCheck.Xunit" Version="2.16.6"/>
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<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
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<PackageReference Include="xunit" Version="2.9.2" />
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<PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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</PackageReference>
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\Games\Games.csproj" />
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</ItemGroup>
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</Project>

‎exercise/C#/day02/Games/FizzBuzz.cs‎

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using LanguageExt;
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namespace Games
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{
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public static class FizzBuzz
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{
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public const int Min = 1;
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public const int Max = 100;
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private static readonly Map<int, string> Mapping =
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Map.create(
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(15, "FizzBuzz"),
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(3, "Fizz"),
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(5, "Buzz")
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);
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public static Option<string> Convert(int input)
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=> IsOutOfRange(input)
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? Option<string>.None
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: ConvertSafely(input);
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private static string ConvertSafely(int input)
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=> Mapping
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.Find(p => Is(p.Key, input))
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.Map(kvp => kvp.Value)
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.FirstOrDefault(input.ToString());
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private static bool Is(int divisor, int input) => input % divisor == 0;
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private static bool IsOutOfRange(int input) => input is < Min or > Max;
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}
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}

‎exercise/C#/day02/Games/Games.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="FsCheck" Version="2.16.6"/>
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<PackageReference Include="LanguageExt.Core" Version="4.4.9" />
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</ItemGroup>
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</Project>

‎exercise/java/day02/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.advent-of-craft</groupId>
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<artifactId>fizzbuzz</artifactId>
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<version>1.0-SNAPSHOT</version>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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<junit.version>5.10.3</junit.version>
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<assertj.version>3.25.3</assertj.version>
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<maven.compiler.version>3.12.1</maven.compiler.version>
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<maven.surefire.version>3.2.2</maven.surefire.version>
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<vavr.version>0.10.4</vavr.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-api</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-params</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.assertj</groupId>
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<artifactId>assertj-core</artifactId>
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<version>${assertj.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>io.vavr</groupId>
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<artifactId>vavr</artifactId>
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<version>${vavr.version}</version>
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</dependency>
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<dependency>
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<groupId>io.vavr</groupId>
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<artifactId>vavr-test</artifactId>
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<version>${vavr.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>${maven.compiler.version}</version>
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<configuration>
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<source>21</source>
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<target>21</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>${maven.surefire.version}</version>
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</plugin>
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</plugins>
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</build>
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</project>

‎exercise/java/day02/src/main/java/games/FizzBuzz.java‎

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package games;
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import io.vavr.collection.LinkedHashMap;
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import io.vavr.collection.Map;
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import io.vavr.control.Option;
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import static io.vavr.control.Option.none;
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import static io.vavr.control.Option.some;
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public class FizzBuzz {
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public static final int MIN = 1;
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public static final int MAX = 100;
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private static final Map<Integer, String> mapping = LinkedHashMap.of(
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15, "FizzBuzz",
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3, "Fizz",
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5, "Buzz"
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);
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public static Option<String> convert(int input) {
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return isOutOfRange(input)
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? none()
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: some(convertSafely(input));
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}
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private static String convertSafely(Integer input) {
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return mapping
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.find(p -> is(p._1, input))
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.map(p -> p._2)
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.getOrElse(input.toString());
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}
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private static boolean is(Integer divisor, Integer input) {
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return input % divisor == 0;
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}
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private static boolean isOutOfRange(Integer input) {
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return input < MIN || input > MAX;
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}
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}

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