189. 旋转数组

package main
import "fmt"
func rotate(nums []int, k int)  {
     tmp :=make([]int,len(nums))
     copy(tmp,nums)
     for i,v:=range tmp{
          index :=(i+k)%len(tmp)
          nums[index]= v
     }
}
func main() {
    s :=[]int{1,2,3,4,5,6,7}
    rotate(s,3)
    fmt.Println(s)
    s1 :=[]int{-1,-100,3,99}
    rotate(s1,2)
    fmt.Println(s1)
}