def sorting(array): for sublist in array: for i in range(len(sublist)): for j in range(len(sublist) - i - 1): if sublist[j] > sublist[j + 1]: sublist[j], sublist[j + 1] = sublist[j + 1], sublist[j] for i in range(len(array)): for j in range(len(array) - i - 1): sum_i = sum(array[j]) sum_j = sum(array[j + 1]) if sum_i > sum_j: array[j], array[j + 1] = array[j + 1], array[j] return array array = [[0, 3, 2], [9, 4, 5], [4, 1, 3]] sorted_array = sorting(array) print(sorted_array)