A39471. $使用代码计算列表 maze 中有多少个 "1",代码正确的是maze = [[1,1,1,1,1,1,1,1,1], [1,0,1,0,0,0,0,0,1], [1,0,1,1,0,1,1,1,1], [1,0,0,0,0,1,0,0,1], [1,0,1,1,0,1,0,1,1], [1,0,0,1,0,0,0,0,1], [1,1,0,1,0,1,1,1,1],[1,0,0,1,0,0,0,\dots$

多选题中等

知识点

二维列表遍历嵌套循环条件计数

题目描述

使用代码计算列表 maze 中有多少个 "1",代码正确的是 maze = [[1,1,1,1,1,1,1,1,1], [1,0,1,0,0,0,0,0,1], [1,0,1,1,0,1,1,1,1], [1,0,0,0,0,1,0,0,1], [1,0,1,1,0,1,0,1,1], [1,0,0,1,0,0,0,0,1], [1,1,0,1,0,1,1,1,1],[1,0,0,1,0,0,0,0,1], [1,1,1,1,1,1,1,1,1], ]

count = 0 for i in maze: for j in i: count += j print(count)

count = [] for i in maze: count.append(sum(i)) print(sum(count))

count = sum(maze) print(count)

count = [] for i in maze: count.extend(i) print(sum(count))

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