| // compile | |
| // Copyright 2019 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| package main | |
| func rotate(s []int, m int) { | |
| l := len(s) | |
| m = m % l | |
| buf := make([]int, m) | |
| copy(buf, s) | |
| copy(s, s[m:]) | |
| copy(s[l-m:], buf) | |
| } | |
| func main() { | |
| a0 := [...]int{1,2,3,4,5} | |
| println(a0[0]) | |
| rotate(a0[:], 1) | |
| println(a0[0]) | |
| rotate(a0[:], -3) | |
| println(a0[0]) | |
| } |