전화번호 목록

 

https://school.programmers.co.kr/learn/courses/30/lessons/42577

프로그래머스

문제풀이

def solution(phone_book):
    phone_book.sort()

    for i in range(len(phone_book) - 1):
        if phone_book[i + 1].startswith(phone_book[i]):
            return False

    return True