Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is able to see the 10 most recent tweets in the user's news feed. Your design should support the following methods: postTweet(userId, tweetId): Compo…

设计一个简化版的推特(Twitter),可以让用户实现发送推文,关注/取消关注其他用户,能够看见关注人(包括自己)的最近十条推文.你的设计需要支持以下的几个功能:    postTweet(userId, tweetId): 创建一条新的推文    getNewsFeed(userId): 检索最近的十条推文.每个推文都必须是由此用户关注的人或者是用户自己发出的.推文必须按照时间顺序由最近的开始排序.    follow(followerId, followeeId): 关注一个用户    un…

//先定义一个数据结构,代表一条微博,有两个内容:发布者id,微博id(代表微博内容) class TwitterData { int userId; int twitterId; public TwitterData(int userId,int twitterId) { this.twitterId = twitterId; this.userId = userId; } } //用一个map存储用户和各用户的关注用户 Map<Integer,Set<Integer>> use…

Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is able to see the 10 most recent tweets in the user's news feed. Your design should support the following methods: postTweet(userId, tweetId): Compo…

https://leetcode.com/problems/design-twitter/ Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is able to see the 10 most recent tweets in the user's news feed. Your design should support the follow…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/design-twitter/description/ 题目描述 Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is a…

题目描述: Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is able to see the 10 most recent tweets in the user's news feed. Your design should support the following methods: postTweet(userId, tweetId):…

二刷尝试了别的办法,用MAP代表关注列表. 然后不初始化,但是只要有用户被使用,而他又不在MAP里,就把他加进去,然后让他关注自己.. 但是这样做超时了. 问题在于这个题解法太多,有很多不同的情况. STACK记录所有推,然后找10个,那太难了,可能某个用户关注的只是几亿里面的某些人,搜索起来很要命. 那可以某人发推,就给所有关注他的人推一下.A关注B的时候,A刷新自己的推特队列,按时间顺序重新查找.这样比较符合现状,但是假如我有几亿关注者,每发一个就要刷新所有人的列表,这个还好.但是,每多一个…

题目连接 https://leetcode.com/problems/design-twitter Design Twitte Description Design a simplified version of Twitter where users can post tweets, follow/unfollow another user and is able to see the 10 most recent tweets in the user’s news feed. Your de…

Note: For the coding companion problem, please see: Encode and Decode TinyURL. How would you design a URL shortening service that is similar to TinyURL? Background:TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com…