(프로그래머스) 콜라츠 추측

문제 링크

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

Javascript

function solution(num) {
    var answer = 0;
    while(num !=1 && answer !=500) {
        num%2==0 ? num = num/2 : num = num*3 +1;
    answer++;
    }
    return num == 1 ? answer : -1;
}