[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:

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