[プログラマーHash Lv 2]電話番号リスト

電話番号リスト

私の答え

def solution(phone_book):
    answer = True
    phone_dic = {}

    for phone_number in phone_book:
        phone_dic[phone_number] = 0

    for phone_number in phone_book:
        temp = ''
        for num in phone_number:
            temp += num
            if temp in phone_dic and temp != phone_number:
                return False
    return answer

他人の解答

def solution(phoneBook):
    phoneBook = sorted(phoneBook)

    for p1, p2 in zip(phoneBook, phoneBook[1:]):
        if p2.startswith(p1):
            return False
    return True