Initial data commit

Task/Sorting-algorithms-Bubble-sort/C-sharp/sorting-algorithms-bubble-sort.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+
+namespace RosettaCode.BubbleSort
+{
+    public static class BubbleSortMethods
+    {
+        //The "this" keyword before the method parameter identifies this as a C# extension
+        //method, which can be called using instance method syntax on any generic list,
+        //without having to modify the generic List<T> code provided by the .NET framework.
+        public static void BubbleSort<T>(this List<T> list) where T : IComparable
+        {
+            bool madeChanges;
+            int itemCount = list.Count;
+            do
+            {
+                madeChanges = false;
+                itemCount--;
+                for (int i = 0; i < itemCount; i++)
+                {
+                    if (list[i].CompareTo(list[i + 1]) > 0)
+                    {
+                        T temp = list[i + 1];
+                        list[i + 1] = list[i];
+                        list[i] = temp;
+                        madeChanges = true;
+                    }
+                }
+            } while (madeChanges);
+        }
+    }
+
+    //A short test program to demonstrate the BubbleSort. The compiler will change the
+    //call to testList.BubbleSort() into one to BubbleSortMethods.BubbleSort<T>(testList).
+    class Program
+    {
+        static void Main()
+        {
+            List<int> testList = new List<int> { 3, 7, 3, 2, 1, -4, 10, 12, 4 };
+            testList.BubbleSort();
+            foreach (var t in testList) Console.Write(t + " ");
+        }
+    }
+}