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