Design Twitter

Design a simplified version of Twitter where users can post tweets, follow/unfollow another user, and see the 10 most recent tweets in their news feed. Implement the Twitter class with postTweet, getNewsFeed, follow, and unfollow methods.

30:00

Design Twitter

medium

Topics

Companies

Design a simplified version of Twitter where users can post tweets, follow/unfollow another user, and see the 10 most recent tweets in their news feed. Implement the Twitter class with postTweet, getNewsFeed, follow, and unfollow methods.

Example 1:

Input: {"commands":["Twitter","postTweet","getNewsFeed","follow","postTweet","getNewsFeed","unfollow","getNewsFeed"],"values":[[],[1,5],[1],[1,2],[2,6],[1],[1,2],[1]]}

Output: [null,null,[5],null,null,[6,5],null,[5]]

Constraints:

$1 \leq \text{userId}, \text{followerId}, \text{followeeId} \leq 500$
$0 \leq \text{tweetId} \leq 10^4$
All tweets in the test cases have unique IDs.
At most $3 \times 10^4$ calls in total to postTweet, getNewsFeed, follow, and unfollow.
A user cannot follow themselves.

Input

arr ={"commands":["Twitter","postTweet","getNewsFeed","follow","postTweet","getNewsFeed","unfollow","getNewsFeed"],"values":[[],[1,5],[1],[1,2],[2,6],[1],[1,2],[1]]}

Initialize Twitter

Operations

User Tweets

No tweets yet

Follows

No follows

News Feed (Top 10)

Empty feed

Current Op

Completed

Variables

No variables to display

DepthFunction Call

Stack empty

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