6 PM – Coding Olympic Training

Homework

Calculate the sum of each column of a two dimensional array. For example

t = [[1, 2, 3],
     [3, 7, 4],
     [8, 3, 5],
     [9, 10, 11, 12]]

Then the output should be

res = [21,22,23,12]

Because for first column: 1 + 3 + 8 + 9 = 21, for second column: 2 + 7 + 3 + 10 = 22, for the third column: 3 + 4 + 5 + 11 = 23, for the fourth column, there is only one element, so the sum is 12.