[프로그래머스 | 자바스크립트] 숫자 찾기

솔루션 const solution = (num, k) => { const answer = [...("" + num)].findIndex((v) => +v === k); console.log(answer); return answer === -1 ? -1 : answer + 1; }; 솔루션 const solution2 = (num, k) => { const answer = num.toString(); if (answer.includes(k)) { return answer.indexOf(k) + 1; } else { return -1; } };