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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].
空间复杂度为O(1)：
public class Solution { public void rotate(int[] nums, int k) { int size = nums.length; int tmp = nums[size-1]; for(int i=0;i<k;i++) { for(int j=size-2;j>=0;j--) { nums[j+1] = nums[j]; } nums[0] = tmp; tmp = nums[size-1]; } } }
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原文地址：http://www.cnblogs.com/mrpod2g/p/4301135.html
