Sum of all Evens in a Matrix

Published by Helen Yu in
arrayscontrol_flowloopsmath

Create a function that returns the sum of all even elements in a 2D matrix.

Examples

sumOfEvens([
  [1, 0, 2],
  [5, 5, 7],
  [9, 4, 3]
]) ➞ 6

// 2 + 4 = 6

sumOfEvens([
  [1, 1],
  [1, 1]
]) ➞ 0

sumOfEvens([
  [42, 9],
  [16, 8]
]) ➞ 66

sumOfEvens([
  [],
  [],
  []
]) ➞ 0

Notes

  • Submatrices will be of equal length.
  • Return 0 if the 2D matrix only consists of empty submatrices.
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