题目大意
顺时针翻转数组(以图像存储为例)
解题思路
先镜像反转,再每行前后翻转
代码
class Solution(object):
def rotate(self, matrix):
""" :type matrix: List[List[int]] :rtype: void Do not return anything, modify matrix in-place instead. """
for i in range(len(matrix)): # 列长度
for j in range(i+1, len(matrix)): # 镜像反转
matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j]
for i in matrix:
print i
for i in range(len(matrix)): # 前后翻转
matrix[i].reverse()
总结
用到内置的reverse()了,算不算犯规呢