python 二维数组90度旋转的方法

如下所示:

#!/usr/bin/env python

#-*- coding: utf-8 -*-

"""

[0, 1, 2, 3]

[0, 1, 2, 3]

[0, 1, 2, 3]

[0, 1, 2, 3]

2维数组顺时针90度旋转后结果如下

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

[0][1] <==> [1][0]

[0][2] <==> [2][0]

[0][3] <==> [3][0]

[1][2] <==> [2][1]

[1][3] <==> [3][1]

[2][3] <==> [3][2]

"""

data=[[i for i in range(4)] for raw in range(4)]

for ele in data:

print ele

a=len(data)

for i in range(a):#外层循环

for j in range(i+1,len(data[i])): #内层循环

#交换数据

temp=data[i][j]

data[i][j]=data[j][i]

data[j][i]=temp

for ele in data:

print ele

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