旋转数组leetcode 189

class Solution {
    public void rotate(int[] nums, int k) {
        int len = nums.length;
        k = k%len;
        int count = 0;
        int temp = 0;
        int start = 0;
        int i = 0;
        int swp = 0;
        while(count<len){
            i=start;
            temp = nums[i];
            do{
                swp = nums[(i+k)%len];
                nums[(i+k)%len] = temp;
                temp = swp;
                ++count;
                i=(i+k)%len;
            } while(i!=start);
            ++start;
        }
    }
}