. - 力扣（LeetCode）

class Solution {
public:void reverse(vector<int>& nums, int start, int end) {while (start < end) {swap(nums[start], nums[end]);start += 1;end -= 1;}}void rotate(vector<int>& nums, int k) {k %= nums.size();reverse(nums, 0, nums.size() - 1);reverse(nums, 0, k - 1);reverse(nums, k, nums.size() - 1);}
};