LeetCode 48. 旋转图像

示例 1:

给定 matrix = 
[
  [1,2,3],
  [4,5,6],
  [7,8,9]
],

原地旋转输入矩阵，使其变为:
[
  [7,4,1],
  [8,5,2],
  [9,6,3]
]
示例 2:

给定 matrix =
[
  [ 5, 1, 9,11],
  [ 2, 4, 8,10],
  [13, 3, 6, 7],
  [15,14,12,16]
], 

原地旋转输入矩阵，使其变为:
[
  [15,13, 2, 5],
  [14, 3, 4, 1],
  [12, 6, 8, 9],
  [16, 7,10,11]
]

class Solution:
    def rotate(self, matrix: [[int]]) -> None:
        """
        Do not return anything, modify matrix in-place instead.
        """
        lenM = len(matrix)
        for i in range(lenM):
            for j in range(i+1, lenM):
                matrix[i][j] ,matrix[j][i] = matrix[j][i], matrix[i][j]
        for i in range(lenM):
            matrix[i].reverse()#进行倒序