Time：02-11
This code give me --> [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]
[[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]
Page link：https//www.codepudding.com/database/296823.html
