문제

https://programmers.co.kr/learn/courses/30/lessons/12943?language=javascript

풀이

function solution(num) {
    let number = num;
    let count = 0;
    
    while (number !== 1) {
        
        if (count >= 500) {
            count = -1;
            break;
        }
        
        if (number % 2 === 0) { // 짝수
            number /= 2;
        } else { // 홀수
            number = number * 3 + 1;
        }
        
        count++;
    }
    
    const answer = count;
    return answer;
}