Initial data commit

Task/Sorting-algorithms-Cocktail-sort/Elena/sorting-algorithms-cocktail-sort.elena

@@ -0,0 +1,50 @@
+import extensions;
+import system'math;
+import system'routines;
+
+extension op
+{
+    cocktailSort()
+    {
+        var list := self.clone();
+
+        bool swapped  := true;
+        while(swapped)
+        {
+            swapped := false;
+
+            for(int i := 0, i <= list.Length - 2, i += 1)
+            {
+                if (list[i]>list[i+1])
+                {
+                    list.exchange(i,i+1);
+                    swapped := true
+                }
+            };
+            ifnot (swapped)
+            {
+                ^ list
+            };
+            swapped := false;
+
+            for(int i := list.Length - 2, i >= 0, i -= 1)
+            {
+                if (list[i]>list[i+1])
+                {
+                    list.exchange(i,i+1);
+                    swapped := true
+                }
+            }
+        };
+
+        ^ list
+    }
+}
+
+public program()
+{
+    var list := new int[]{3, 5, 1, 9, 7, 6, 8, 2, 4 };
+
+    console.printLine("before:", list.asEnumerable());
+    console.printLine("after :", list.cocktailSort().asEnumerable())
+}