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Task/Sorting-algorithms-Cocktail-sort/Ruby/sorting-algorithms-cocktail-sort.rb

@@ -0,0 +1,26 @@
+class Array
+  def cocktailsort!
+    begin
+      swapped = false
+      0.upto(length - 2) do |i|
+        if self[i] > self[i + 1]
+          self[i], self[i + 1] = self[i + 1], self[i]
+          swapped = true
+        end
+      end
+      break if not swapped
+
+      swapped = false
+      (length - 2).downto(0) do |i|
+        if self[i] > self[i + 1]
+          self[i], self[i + 1] = self[i + 1], self[i]
+          swapped = true
+        end
+      end
+    end while swapped
+    self
+  end
+end
+ary = [7,6,5,9,8,4,3,1,2,0]
+ary.cocktailsort!
+# => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]