Digit Sum Array
EasyP3Coding
Return a new array of the same length where each element is replaced by the sum of its decimal digits. [123, 9, 40] becomes [6, 9, 4].
Example 1
- Input
- arr = [123,9,40]
- Output
- [6,9,4]
Example 2
- Input
- arr = [0]
- Output
- [0]
Example 3
- Input
- arr = [5]
- Output
- [5]
Constraints
- 1 <= arr.length <= 10^5
- 0 <= arr[i] <= 10^9
Hints
Give it a real attempt first. Run shows which examples fail.
Saved automatically
Run checks the 3 visible tests, Submit all 8. ⌘Enter runs, ⌘⇧Enter submits.