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Commands = ["Twitter", "postTweet", "getNewsFeed", "follow", "postTweet", "getNewsFeed", "unfollow", "getNewsFeed"], ids=[[], [1, 5], [1], [1, 2], [2, 6], [1], [1, 2], [1]][null, null, [5], null, null, [6, 5], null, [5]]Commands = ["Twitter","postTweet","postTweet","postTweet","getNewsFeed"], ids = [[],[1,1],[2,2],[1,3],[1]][null,null,null,null,[3,1]]Time Complexity
Space Complexity