2023 07 13 木の直径 【アルゴリズム】入れ子リストの行和・列和を取る方法 A = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] sum_h = list(map(sum, A)) # [6, 15, 24] sum_w = list(map(sum, zip(*A))) # [12, 15, 18] Was this page helpful? Thanks for your feedback! Thanks for your feedback!