Initial data commit

Task/Sorting-algorithms-Cocktail-sort/Go/sorting-algorithms-cocktail-sort-1.go

@@ -0,0 +1,36 @@
+package main
+
+import "fmt"
+
+func main() {
+    a := []int{170, 45, 75, -90, -802, 24, 2, 66}
+    fmt.Println("before:", a)
+    cocktailSort(a)
+    fmt.Println("after: ", a)
+}
+
+func cocktailSort(a []int) {
+    last := len(a) - 1
+    for {
+        swapped := false
+        for i := 0; i < last; i++ {
+            if a[i] > a[i+1] {
+                a[i], a[i+1] = a[i+1], a[i]
+                swapped = true
+            }
+        }
+        if !swapped {
+            return
+        }
+        swapped = false
+        for i := last - 1; i >= 0; i-- {
+            if a[i] > a[i+1] {
+                a[i], a[i+1] = a[i+1], a[i]
+                swapped = true
+            }
+        }
+        if !swapped {
+            return
+        }
+    }
+}

Task/Sorting-algorithms-Cocktail-sort/Go/sorting-algorithms-cocktail-sort-2.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+  "sort"
+  "fmt"
+)
+
+func main() {
+    a := []int{170, 45, 75, -90, -802, 24, 2, 66}
+    fmt.Println("before:", a)
+    cocktailSort(sort.IntSlice(a))
+    fmt.Println("after: ", a)
+}
+
+func cocktailSort(a sort.Interface) {
+    last := a.Len() - 1
+    for {
+        swapped := false
+        for i := 0; i < last; i++ {
+            if a.Less(i+1, i) {
+                a.Swap(i, i+1)
+                swapped = true
+            }
+        }
+        if !swapped {
+            return
+        }
+        swapped = false
+        for i := last - 1; i >= 0; i-- {
+            if a.Less(i+1, i) {
+                a.Swap(i, i+1)
+                swapped = true
+            }
+        }
+        if !swapped {
+            return
+        }
+    }
+}