Lv.1 핸드폰번호 가리기

https://programmers.co.kr/learn/courses/30/lessons/12948

 

 

 

12/3

def solution(phone_number):
    b = list()
    a = 0
    while a <= (len(phone_number) - 5) :
        b.append('*')
        a = a + 1
    b.append(phone_number[-4: ])
    answer = ''.join(b)
    return answer