message: Add new solution for rotate-array.py
diff: @@ -83,6 +83,16 @@ class Solution3:
  break
  start += 1
  +class Solution4:
  + """
  + :type nums: List[int]
  + :type k: int
  + :rtype: void Do not return anything, modify nums in-place instead.
  + """
  + def rotate(self, nums, k):
  + while k > 0:
  + nums.insert(0, nums.pop())
  + k -= 1
  if __name__ == '__main__':
  nums = [1, 2, 3, 4, 5, 6, 7]
  