문제

https://programmers.co.kr/learn/courses/30/lessons/12947

풀이

function solution(x) {
    const strNum = String(x); // "18"
    let nSum = 0;
    for (let i = 0; i < strNum.length; i++) {
        nSum += Number(strNum[i]); // 9
    }
    let answer;
    if (x % nSum === 0) {
        answer = true;
    } else {
        answer = false;
    }
    return answer;
}