Csharp Challenge 1 (YearOfProgramming#443)

* [C#] Challenge 0 (Unreviewed)

* [C#] Challenge 1 (Unreviewed)

challenge_1/csharp/jfrancis2/README.md

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+# Challenge 1 - Reverse a String
+###### C#
+
+### 1. Approach to Solving the problem
+
+I had to work out how to get a string, then make it backwards. Turns out there are inbuilt functions for this.
+
+### 2. How to compile and run this code
+
+From the /src directory, use `csc.exe program.cs`
+
+### 3. How this program works
+
+Takes a string from the console input
+Converts to a char array
+Uses the 'System.Reverse' function to change the order of the characters
+Displays the reversed string

challenge_1/csharp/jfrancis2/src/program.cs

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+using System;
+namespace YOP2017
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Enter a string to reverse: ");
+            string input = Console.ReadLine();
+            Console.WriteLine("Your string in reverse: " + Program.reverseString(input));
+            Console.WriteLine("Press any key to exit.")
+            Console.ReadKey(true);
+        }
+        public static string reverseString(string input)
+        {
+            char[] arr = input.ToCharArray();
+            Array.Reverse(arr);
+            return new string(arr);
+        }
+    }
+}