如何在 Python 中转置 2D arrays

Question

我正在尝试转置一个 2x3 2D 数组（行变成列，反之亦然）。 用户输入6个数字，然后我必须做rest。 我不允许导入任何库。 这是我到目前为止所拥有的：

array1 = [[0 for column in range (2)] for row in range (3)]

for i in range (3):
    for j in range (2):
        array1[i][j] = int(input())

for i in range (3):
    for j in range (2):
        if j == 0:
            print (array1[i][j], end = " ")
        else:
            print (array1[i][j])

此代码存储并打印一个 2x3 2D 数组，对让我更进一步有帮助吗？

Answer 1

如果打印是您唯一关心的问题，那么以下代码会有所帮助：

array1 = [[0 for column in range (2)] for row in range (3)]

for i in range (3):
    for j in range (2):
        array1[i][j] = int(input())

for i in range (3):
    for j in range (2):
        if j == 0:
            print (array1[i][j], end = " ")
        else:
            print (array1[i][j])

for j in range (2):
    for i in range (3):
        if i == 0 or i == 1:
            print (array1[i][j], end = " ")
        else:
            print (array1[i][j])

但是，如果您需要存储数组的转置，您可以使用：

import numpy as np
new_array = np.array(array1)
new_array = new_array.T