Add up the evens
- O(n) · Medium
- Full plan
- Python
- JavaScript
- loops
- lists
Problem
Write a function that takes a list of whole numbers and returns the sum of the ones that are even. If there are none, return 0.
Examples
[1, 2, 3, 4] → 6
[] → 0
[1, 3, 5] → 0
Besides these, the challenge has hidden tests that are revealed when you submit your solution.
You start with this
Python
def sum_evens(numbers):
passJavaScript
function sumEvens(numbers) {
}Solve this challenge
It opens in your browser, with the editor and the tests. This challenge is part of the full plan; the O(1) and O(log n) ones are free.