🦕 공룡이 되자!

def solution(phone_book): phone_book.sort() for i, j in zip(phone_book, phone_book[1:]): if j.startswith(i): return False return True 해쉬 def solution(phone_book): answer = True hash_map = {} for phone_number in phone_book: hash_map[phone_number] = 1 for phone_number in phone_book: temp = "" for number in phone_number: temp += number if temp in hash_map and temp != phone_number: answer = False re..