每次有人玩游戏时，都会重新排列的排行榜。

下面是一个示例的解决方法，使用Python语言实现：

class Player:
    def __init__(self, name, score):
        self.name = name
        self.score = score

class Leaderboard:
    def __init__(self):
        self.players = []
    
    def add_player(self, player):
        self.players.append(player)
        self.players.sort(key=lambda x: x.score, reverse=True)
    
    def remove_player(self, player):
        self.players.remove(player)
    
    def update_score(self, player, new_score):
        player.score = new_score
        self.players.sort(key=lambda x: x.score, reverse=True)
    
    def get_rank(self, player):
        return self.players.index(player) + 1

# 示例用法
board = Leaderboard()

player1 = Player("Alice", 100)
player2 = Player("Bob", 80)
player3 = Player("Charlie", 120)

board.add_player(player1)
board.add_player(player2)
board.add_player(player3)

print("当前排行榜：")
for i, player in enumerate(board.players):
    print(f"{i+1}. {player.name} - {player.score}")

print(f"\nCharlie的排名是第{board.get_rank(player3)}名")

board.update_score(player1, 150)

print("\n更新分数后的排行榜：")
for i, player in enumerate(board.players):
    print(f"{i+1}. {player.name} - {player.score}")

board.remove_player(player2)

print("\n移除Bob后的排行榜：")
for i, player in enumerate(board.players):
    print(f"{i+1}. {player.name} - {player.score}")

输出结果：

当前排行榜：
1. Charlie - 120
2. Alice - 100
3. Bob - 80

Charlie的排名是第1名

更新分数后的排行榜：
1. Alice - 150
2. Charlie - 120
3. Bob - 80

移除Bob后的排行榜：
1. Alice - 150
2. Charlie - 120