python3--算法基础：二维数组转90度

python3--算法基础：二维数组转90度

[0, 1, 2, 3]
[0, 1, 2, 3]
[0, 1, 2, 3]
[0, 1, 2, 3]

二维数组转90度

[0, 0, 0, 0]
[1, 1, 1, 1]
[2, 2, 2, 2]
[3, 3, 3, 3]

#!/usr/bin/env python

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

# 算法基础：二维数组转90度

a = [col for col in range(4)]

print(a)

print("--------------------")

a = [[col for col in range(4)] for row in range(4)]

print(a)

for li in a : print(li)

print("--------------------")

for i, row in  enumerate(a):

    print(i, row)

    for j in range(len(row) - i):

        tmp = a[j + i][i]

        a[j + i][i] = row[j + i]

        a[i][j + i] = tmp

    print("*****************")

    for r in a:print(r)

print(a)

for rr in a:print(rr)

print("=-----------改range开始值----------")

a = [col for col in range(4)]

print(a)

print("--------------------")

a = [[col for col in range(4)] for row in range(4)]

print(a)

for li in a : print(li)

print("--------------------")

for i, row in  enumerate(a):

    print(i, row)

    for j in range(i, len(row)):    # 改range开始值

        print(j)

        tmp = a[j][i]

        a[j][i] = row[j]

        a[i][j] = tmp

    print("*****************")

    for r in a:print(r)

print(a)

for rr in a:print(rr)

以上代码运行结果：

D:\ProgramData\Anaconda3\python.exe D:/py/day001/day1/test.py

[0, 1, 2, 3]

--------------------

[[0, 1, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3]]

[0, 1, 2, 3]

[0, 1, 2, 3]

[0, 1, 2, 3]

[0, 1, 2, 3]

--------------------

0 [0, 1, 2, 3]

*****************

[0, 0, 0, 0]

[1, 1, 2, 3]

[2, 1, 2, 3]

[3, 1, 2, 3]

1 [1, 1, 2, 3]

*****************

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 3]

[3, 3, 2, 3]

2 [2, 2, 2, 3]

*****************

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

3 [3, 3, 3, 3]

*****************

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

[[0, 0, 0, 0], [1, 1, 1, 1], [2, 2, 2, 2], [3, 3, 3, 3]]

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

=-----------改range开始值----------

[0, 1, 2, 3]

--------------------

[[0, 1, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3], [0, 1, 2, 3]]

[0, 1, 2, 3]

[0, 1, 2, 3]

[0, 1, 2, 3]

[0, 1, 2, 3]

--------------------

0 [0, 1, 2, 3]

0

1

2

3

*****************

[0, 0, 0, 0]

[1, 1, 2, 3]

[2, 1, 2, 3]

[3, 1, 2, 3]

1 [1, 1, 2, 3]

1

2

3

*****************

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 3]

[3, 3, 2, 3]

2 [2, 2, 2, 3]

2

3

*****************

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

3 [3, 3, 3, 3]

3

*****************

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

[[0, 0, 0, 0], [1, 1, 1, 1], [2, 2, 2, 2], [3, 3, 3, 3]]

[0, 0, 0, 0]

[1, 1, 1, 1]

[2, 2, 2, 2]

[3, 3, 3, 3]

Process finished with exit code 0