[Python] 프로그래머스 12943. 콜라츠 추측 (Lv.1)

https://school.programmers.co.kr/learn/courses/30/lessons/12943

프로그래머스

 

def solution(num):
    answer = 0
    
    while num != 1 and answer <= 500:
        if num % 2 == 0:
            num //= 2
        else:
            num = (num * 3) + 1
        
        answer += 1
        
    return answer if answer <= 500 else -1