- docgunthrop
- created an issue for "Sum of Rows and Columns" kata
- That's a two dimensional array, not three.
- There already exist plenty of basic katas involving sums of array elements:
- https://www.codewars.com/kata/array-plus-array
- https://www.codewars.com/kata/matrix-addition
- https://www.codewars.com/kata/sum-the-array
