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harshadNumber.js
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harshadNumber.js
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// 하샤드 수
// 문제 설명
// 양의 정수 x가 하샤드 수이려면 x의 자릿수의 합으로 x가 나누어져야 합니다. 예를 들어 18의 자릿수 합은 1+8=9이고, 18은 9로 나누어 떨어지므로 18은 하샤드 수입니다. 자연수 x를 입력받아 x가 하샤드 수인지 아닌지 검사하는 함수, solution을 완성해주세요.
// 제한 조건
// x는 1 이상, 10000 이하인 정수입니다.
// 입출력 예 #1
// 10의 모든 자릿수의 합은 1입니다. 10은 1로 나누어 떨어지므로 10은 하샤드 수입니다.
// 입출력 예 #2
// 12의 모든 자릿수의 합은 3입니다. 12는 3으로 나누어 떨어지므로 12는 하샤드 수입니다.
// 입출력 예 #3
// 11의 모든 자릿수의 합은 2입니다. 11은 2로 나누어 떨어지지 않으므로 11는 하샤드 수가 아닙니다.
// 입출력 예 #4
// 13의 모든 자릿수의 합은 4입니다. 13은 4로 나누어 떨어지지 않으므로 13은 하샤드 수가 아닙니다.
function solution(x) {
let answer = true;
let sumX = 0;
strX = x.toString().split("");
for (let n of strX) {
n = Number(n);
sumX += n;
}
answer = Number(x) % sumX === 0 ? true : false;
return answer;
}
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