콜라츠추측

//while문
function solution(num) {
    var answer = 0;
    
    while(num !== 1){
        if(answer>500){
            return -1;
        }
        else{
            if(num%2===0){
                num = num/2
                answer++
            }
            else{
                num = num*3+1
                answer++
            }
        }
    }
    
    return answer;
    
}

//for문

function solution(num) {
    let count = 0;
    
    for(let i=1; i<=500; i++) {
        if(num === 1) {
            break;
        }
        
        num = num % 2 === 0 ? num / 2 : (num * 3) + 1;
        count++;
        
        if(i === 500) {
            return -1;
        }
    }
    
    return count;
}