#207. sumDigits
sumDigits
Background
Description
Given a non-negative int n, return the sum of its digits recursively (no loops). Note that mod (%) by 10 yields the rightmost digit (126 % 10 is 6), while divide (/) by 10 removes the rightmost digit (126 / 10 is 12).
Format
Input
Output
Samples
126
9
49
13
12
3
Limitation
1s, 1024KiB for each test case.