[프로그래머스] Python 완주하지 못한 선수

 

def solution(participant, completion):
    p=sorted(participant)
    c=sorted(completion)
    
    for i in range(len(c)):
        if p[i] != c[i]:
            return p[i]
    
      
    return p[len(p)-1]

hash를 이용한 풀이

def solution(participant, completion):
    answer = ''
    temp = 0
    dic = {}
    for part in participant:
        dic[hash(part)] = part
        temp += int(hash(part))
    for com in completion:
        temp -= hash(com)
    answer = dic[temp]

    return answer

• ...환상적이다.....