[LeetCode] Rotate Array

Question:

Rotate an array of n elements to the right by k steps.

For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4].

1、题型分类:

2、思路:

3、时间复杂度:

4、代码:

public class Solution {
    public void rotate(int[] nums, int k) {
        int len=nums.length;
        k=k%len;
        int [] temp=new int[len+k];
        System.arraycopy(nums, 0, temp, k, len);
        System.arraycopy(temp, len, temp, 0, k);
        System.arraycopy(temp, 0, nums, 0, len);
    }
}

 

5、优化:

6、扩展:

posted @ 2015-07-13 19:58  Maydow  阅读(112)  评论(0编辑  收藏  举报