Add C# reverse words in a string

algorithms/CSharp/src/Strings/reverse-words-in-string.cs

@@ -0,0 +1,30 @@
+using System;
+
+//Reverse the order of the words in a given string
+//Example: "Hello World" becomes "World Hello"
+
+namespace Algorithms.Strings
+{
+    public class ReverseWordsInString
+    {
+        public static void Main()
+        {
+            Console.WriteLine("Please enter a string");
+            string originalString = Console.ReadLine();
+
+            Console.WriteLine(ReverseWords(originalString));
+        }
+
+        public static string ReverseWords(string input)
+        {
+            string[] words = input.Split(' ');
+            
+            Array.Reverse(words);
+
+            string reversedString = string.Join(" ", words);
+
+            return reversedString;
+        }
+    }
+}
+