Kata

given an input (list of list) return summed inner list list, each list varing in length may have negatives and empty arrays

should output summed inner list of list list

input:

[[1, 5, 7, 1], [1, 7], [6], [], [7, 1, 8, 2, 9]]

output:

[15, 13, 15, 3, 9]

based on:

1 5 7 1
1 7    
6
0 
7 1 8 2 9
--------------
15 13 15 3 9

note:

1. im still new making katas
2. idk how make random tests
3. pls report any problem

i will be grateful for your help