新一轮的「力扣杯」编程大赛即将启动,为了动态显示参赛者的得分数据,需要设计一个排行榜 Leaderboard。
请你帮忙来设计这个 Leaderboard
类,使得它有如下 3 个函数:
addScore(playerId, score)
:<ul> <li>假如参赛者已经在排行榜上,就给他的当前得分增加 <code>score</code> 点分值并更新排行。</li> <li>假如该参赛者不在排行榜上,就把他添加到榜单上,并且将分数设置为 <code>score</code>。</li> </ul> </li> <li><code>top(K)</code>:返回前 <code>K</code> 名参赛者的 <strong>得分总和</strong>。</li> <li><code>reset(playerId)</code>:将指定参赛者的成绩清零。题目保证在调用此函数前,该参赛者已有成绩,并且在榜单上。</li>
请注意,在初始状态下,排行榜是空的。
示例 1:
输入: ["Leaderboard","addScore","addScore","addScore","addScore","addScore","top","reset","reset","addScore","top"] [[],[1,73],[2,56],[3,39],[4,51],[5,4],[1],[1],[2],[2,51],[3]] 输出: [null,null,null,null,null,null,73,null,null,null,141] 解释: Leaderboard leaderboard = new Leaderboard (); leaderboard.addScore(1,73); // leaderboard = [[1,73]]; leaderboard.addScore(2,56); // leaderboard = [[1,73],[2,56]]; leaderboard.addScore(3,39); // leaderboard = [[1,73],[2,56],[3,39]]; leaderboard.addScore(4,51); // leaderboard = [[1,73],[2,56],[3,39],[4,51]]; leaderboard.addScore(5,4); // leaderboard = [[1,73],[2,56],[3,39],[4,51],[5,4]]; leaderboard.top(1); // returns 73; leaderboard.reset(1); // leaderboard = [[2,56],[3,39],[4,51],[5,4]]; leaderboard.reset(2); // leaderboard = [[3,39],[4,51],[5,4]]; leaderboard.addScore(2,51); // leaderboard = [[2,51],[3,39],[4,51],[5,4]]; leaderboard.top(3); // returns 141 = 51 + 51 + 39;
提示:
1 <= playerId, K <= 10000
- 题目保证
K
小于或等于当前参赛者的数量 1 <= score <= 100
- 最多进行
1000
次函数调用