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Python之2维list转置、旋转及其简单应用

 给一个矩阵,顺时针旋转顺序输出其元素,例如:

对于矩阵:

[ 1, 2, 3 ]

[ 4, 5, 6 ]

[ 7, 8, 9 ]

 输出为:

1,2,3,6,9,8,7,4,5

 

def transpose(matrix):
return zip(*matrix)

def rotate(matrix):
return zip(*matrix)[::-1]

def rotatePrint(matrix):
import copy
matrix = copy.deepcopy(matrix)
return matrix and list(matrix.pop(0)) + rotatePrint(rotate(matrix))


######### Test #############

def printMatrix(matrix):
for row in matrix:
print ' '.join( str(i) for i in row)

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

print 'original:'
printMatrix(matrix)

print 'rotate print:',rotatePrint(matrix)

print 'transpose:'
printMatrix( transpose(matrix) )

print 'rotate:'
printMatrix( rotate(matrix))

输出为:

Python之2维list转置、旋转及其简单应用_顺时针

 

黄世宇/Shiyu Huang's Personal Page:​​https://huangshiyu13.github.io/​​



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