1 2 3
4 5 6
7 8 9

6 9
5 8
4 7

matrix = [[1,2,3], [4,5,6], [7,8,9]]
matrix = map(list, zip(*matrix))
print(matrix)
 
>[[1, 4, 7], [2, 5, 8], [3, 6, 9]]

matrix = [[1,2,3], [4,5,6], [7,8,9]]
matrix[:] = map(list,zip(*matrix[::-1]))
print(matrix)
 
>[[7, 4, 1], [8, 5, 2], [9, 6, 3]]

matrix = [[1,2,3], [4,5,6], [7,8,9]]
matrix[:] = map(list,zip(*matrix))[::-1]
print(matrix)
 
>[[3, 6, 9], [2, 5, 8], [1, 4, 7]]

# -*- coding:utf-8 -*-
class Solution:
  # matrix类型为二维列表，需要返回列表
  def printMatrix(self, matrix):
    # write code here
    result = []
    while(matrix):
      result += matrix.pop(0)
      if not matrix or not matrix[0]:
        break
      # 将矩阵逆时针旋转
      matrix[:] = map(list, zip(*matrix))[::-1]
    return result