Add Darts Exercise (#712)

* add darts exercise

* make darts class static

* update Darts project file

* remove empty line

* add README and update darts UUID

* update README with additional instructions

* update config.json with proper values

* remove space from config.json uuid

Author: bmeverett

config.json

@@ -230,10 +230,12 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yacht", "yacht\Yacht.csproj
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RationalNumbers", "rational-numbers\RationalNumbers.csproj", "{0CBB430D-BF64-436F-93BE-8E8088DBCBFE}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AffineCipher", "affine-cipher\AffineCipher.csproj", "{758DDF02-FFE7-4A4A-BD7C-0B189F3257C9}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AffineCipher", "affine-cipher\AffineCipher.csproj", "{758DDF02-FFE7-4A4A-BD7C-0B189F3257C9}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RestApi", "rest-api\RestApi.csproj", "{DFF04F1E-2963-4A88-AF92-D14AD48617F2}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Darts", "darts\Darts.csproj", "{202E2755-AB2F-4EA5-94D0-574487079CFF}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -704,6 +706,10 @@ Global
 		{DFF04F1E-2963-4A88-AF92-D14AD48617F2}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{DFF04F1E-2963-4A88-AF92-D14AD48617F2}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DFF04F1E-2963-4A88-AF92-D14AD48617F2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{202E2755-AB2F-4EA5-94D0-574487079CFF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{202E2755-AB2F-4EA5-94D0-574487079CFF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{202E2755-AB2F-4EA5-94D0-574487079CFF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{202E2755-AB2F-4EA5-94D0-574487079CFF}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

exercises/Exercises.sln

@@ -0,0 +1,9 @@
+using System;
+
+public static class Darts
+{
+    public static int Score(double x, double y)
+    {
+       throw new NotImplementedException("You need to implement this function");
+    }
+}

exercises/darts/Darts.cs

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Remove="Example.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
+    <PackageReference Include="xunit" Version="2.4.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+  </ItemGroup>
+
+</Project>

exercises/darts/Darts.csproj

@@ -0,0 +1,36 @@
+// This file was auto-generated based on version 1.0.0 of the canonical data.
+
+using Xunit;
+
+public class DartsTest
+{
+    [Fact]
+    public void A_dart_lands_outside_the_target()
+    {
+        Assert.Equal(0, Darts.Score(15.3, 13.2));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void A_dart_lands_just_in_the_border_of_the_target()
+    {
+        Assert.Equal(1, Darts.Score(10, 0));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void A_dart_lands_in_the_middle_circle()
+    {
+        Assert.Equal(5, Darts.Score(3, 3.7));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void A_dart_lands_right_in_the_border_between_outside_and_middle_circles()
+    {
+        Assert.Equal(5, Darts.Score(0, 5));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void A_dart_lands_in_the_inner_circle()
+    {
+        Assert.Equal(10, Darts.Score(0, 0));
+    }
+}

exercises/darts/DartsTest.cs

@@ -0,0 +1,19 @@
+using System;
+
+public static class Darts
+{
+    public static int Score(double x, double y)
+    {
+        var diff = Math.Pow(x, 2) + Math.Pow(y, 2);
+        if (diff > 100) // outside the radius 10 squared
+            return 0;
+        if (diff <= 100 && diff > 25) // outer circle radius of 10 squared
+            return 1;
+        if (diff <= 25 && diff > 1) // middle circle radius of 5 squared
+            return 5;
+        if (diff <= 1) // in circle radius of 1 squared
+            return 10;
+
+        return 0;
+    }
+}

exercises/darts/Example.cs

@@ -0,0 +1,27 @@
+Write a function that returns the earned points in a single toss of a Darts game.
+
+[Darts](https://en.wikipedia.org/wiki/Darts) is a game where players
+throw darts to a [target](https://en.wikipedia.org/wiki/Darts#/media/File:Darts_in_a_dartboard.jpg).
+
+In our particular instance of the game, the target rewards with 4 different amounts of points, depending on where the dart lands:
+
+- If the dart lands outside the target, player earns no points (0 points).
+- If the dart lands in the outer circle of the target, player earns 1 point.
+- If the dart lands in the middle circle of the target, player earns 5 points.
+- If the dart lands in the inner circle of the target, player earns 10 points.
+
+The outer circle has a radius of 10 units (This is equivalent to the total radius for the entire target), the middle circle a radius of 5 units, and the inner circle a radius of 1. Of course, they are all centered to the same point (That is, the circles are [concentric](http://mathworld.wolfram.com/ConcentricCircles.html)) defined by the coordinates (0, 0).
+
+Write a function that given a point in the target (defined by its `real` cartesian coordinates `x` and `y`), returns the correct amount earned by a dart landing in that point.
+
+## Running the tests
+
+To run the tests, run the command `dotnet test` from within the exercise directory.
+
+## Further information
+
+For more detailed information about the C# track, including how to get help if
+you're having trouble, please visit the exercism.io [C# language page](http://exercism.io/languages/csharp/resources).
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.

exercises/darts/README.md

@@ -0,0 +1,8 @@
+using Exercism.CSharp.Exercises;
+
+namespace Exercism.CSharp.Exercises.Generators
+{
+    public class Darts : GeneratorExercise
+    {
+    }
+}