#1837 - Sum of Digits in Base K

Easy • View on LeetCode • View on GitHub

Problem Description

Given an integer n (in base 10) and a base k, return the sum of the digits of n after converting n from base 10 to base k.

After converting, each digit should be interpreted as a base 10 number, and the sum should be returned in base 10.

Solution

/**
 * @param {number} n
 * @param {number} k
 * @return {number}
 */
var sumBase = function(n, k) {
  let digitSum = 0;

  while (n > 0) {
    digitSum += n % k;
    n = Math.floor(n / k);
  }

  return digitSum;
};