September Morn Update

Task/Permutations/Go/permutations-2.go

@@ -0,0 +1,29 @@
+package main
+
+import "fmt"
+
+func main() {
+        var a = []int{1, 2, 3}
+        fmt.Println(a)
+        var n = len(a) - 1
+        var i, j int
+        for c := 1; c < 6; c++ { // 3! = 6:
+                i = n - 1
+                j = n
+                for a[i] > a[i+1] {
+                        i--
+                }
+                for a[j] < a[i] {
+                        j--
+                }
+                a[i], a[j] = a[j], a[i]
+                j = n
+                i += 1
+                for i < j {
+                        a[i], a[j] = a[j], a[i]
+                        i++
+                        j--
+                }
+                fmt.Println(a)
+        }
+}