Hi,

Sorry I missunderstand your problem. Following this matrix:

[[1, 2, 3, 4],

 [5, 6, 7, 8],

 [9, 8, 7, 3] ]

if you want to compute the sum of all the diagonals, they are:

9             => 9

5 + 8       => 13

1 + 6 + 7 => 14

2 + 7 + 3 => 12

3 + 8       => 11

4            =>  4

So this result do not fit your expected result.

If you start by the top left and you log previous result you can to have:

1

1 + 6 => 7

1 + 6 + 7 => 14

giving: [ 1 7 14 ]

could you provide some information?

Hi

start from top left. 

1

5+2=7

9+6+3=18

8+7+4=19

8+7=15

3

I need to sum it from top left.

I wrote a snippet code here: https://gist.github.com/bioinfornatics/b84da92488ef55453f0a

Which works as expected

Feel free to write the algorithm to your language