[Python] 백준 6973 - Dynamic Dictionary Coding

문제

https://www.acmicpc.net/problem/6973

6973번: Dynamic Dictionary Coding

 

해설

처음 입력된 case만큼의 단어 사전을 만드는 문제이다. 각 case는 여러 문장을 입력받고 모든 단어를 단어 사전에 등재한다. 사전에는 등재된 순서대로 단어와 정수를 매핑(e.g. {"text": 1})한다. 그리고 가장 처음 나온 단어는 숫자가 아닌 단어 그대로 표기한다. 각 사전은 single blank line으로 구별되어야 하며, case마다 각각 생성되어야 한다.

EOF error를 예외처리해주지 않아 계속 런타임 에러가 발생했다. ctrl+z, ctrl+c와 같이 사용자 입력을 받아 종료하려 할 때 발생한 것 같다. 처음 풀어보는 알고리즘 문제라 그런지 여기서 시간을 좀 낭비했다. 원래 넣어줘야 하나?

 

case = int(input())

for _ in range(case):
    word_dict = {}
    dict_idx = 1

    while True:
        try:
            sentence = input().split()
            if not sentence:
                break

            words = set(sentence)
            for idx, word in enumerate(sentence):
                if word in word_dict:
                    sentence[idx] = word_dict[word]
                else:
                    word_dict[word] = str(dict_idx)
                    dict_idx += 1

            print(" ".join(sentence))
        except EOFError:
            break
    print()