PROGRAMMERS 42579: 베스트앨범

Link : programmers.co.kr/learn/courses/30/lessons/42579

---

Python

def solution(genres, plays):
    answer = []
    ranking_kind = dict()
    play = dict()
    for idx, key in enumerate(genres):
        if key not in play:
            play[key] = list()
            ranking_kind[key] = 0
        ranking_kind[key] += plays[idx]
        play[key].append((plays[idx], idx))
 
    for i in play:
        play[i].sort(key=lambda x: x[0], reverse=True)
    ranking_kind = [[i, ranking_kind[i]] for i in ranking_kind]
    ranking_kind.sort(key=lambda x: x[1], reverse=True)
 
    for i in ranking_kind:
        for repeat in range(2):
            try:
                answer.append(play[i[0]][repeat][1])
            except Exception:
                pass
    return answer

FeedBack

1.  

---

 

 

 

cjw.git@gmail.com