프로그래머스 스쿨 - 달리기 경주(Python)(복습)

answer = []

def solution(players, callings):

    pl = {}

    for i, j in enumerate(players):

        pl[j] = i

    for i in callings:

        a = pl[i]

        cur = players[a]

        pre = players[a-1]

        pl[cur] -= 1

        pl[pre] += 1

        players[a] = pre

        players[a-1] = cur

    answer = players

    return answer