Leetcode之Rotate Array 问题

问题描述：

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

Note:
Try to come up as many solutions as you can, there are at least 3 different ways to solve this problem.

示例：

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].

思路分析：

这道题还是很常见的吧，只需要旋转三次就行了。但是，这道题有一个问题需要考虑到：如果k大于数组长度咋办？也就是说上面的例子可以旋转3次，也可以旋转10次等等，以此类推，所以我们在这要来一个求余操作，即 k %= n.

代码：