题目
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].
代码
class Solution(object):
def rotate(self, nums, k):
"""
:type nums: List[int]
:type k: int
:rtype: void Do not return anything, modify nums in-place instead.
"""
if nums==None or len(nums)==0 or k<0:
return
t = nums[:]
for i in range(len(t)):
nums[(i+k)%len(t)] = t[i]
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