[코딩테스트] 달리기 경주

달리기 경주

핵심

• dictionary
• enumerate
• dictionary & enumerate

def solution(players, callings):
    idx_player = {i:player for i,player in enumerate(players)}
    player_idx = {player:i for i,player in enumerate(players)}

    for i in callings:
        cur_idx = player_idx[i]
        pre_idx = cur_idx -1
        pre_player = idx_player[pre_idx]
        cur_player = i

        player_idx[cur_player] = pre_idx
        player_idx[pre_player] = cur_idx

        idx_player[pre_idx] = cur_player
        idx_player[cur_idx] = pre_player
    return list(idx_player.values())