class Solution(object):    def rotate(self, nums, k):        """        :type nums: List[int]        :type k: int        :rtype: None Do not return anything, modify nums in-place instead.        """        nums = list(reversed(nums[:k])) + list(reversed(nums[k:]))        nums = list(reversed(nums))

旋转前k个，和后面的数，最后统一旋转，就完成了。