Exercise Implement a console-based social networking application (similar to Twitter) satisfying the scenarios below. Features Posting: Alice can publish messages to a personal timeline

Alice -> I love the weather today Bob -> Damn! We lost! Bob -> Good game though.

Reading: I can view Alice and Bob’s timelines

Alice I love the weather today (5 minutes ago) Bob Good game though. (1 minute ago) Damn! We lost! (2 minutes ago)

Following: Charlie can subscribe to Alice’s and Bob’s timelines, and view an aggregated list of all subscriptions

Charlie -> I'm in New York today! Anyone want to have a coffee? Charlie follows Alice Charlie wall Charlie - I'm in New York today! Anyone want to have a coffee? (2 seconds ago) Alice - I love the weather today (5 minutes ago)

Charlie follows Bob Charlie wall Charlie - I'm in New York today! Anyone wants to have a coffee? (15 seconds ago) Bob - Good game though. (1 minute ago) Bob - Damn! We lost! (2 minutes ago) Alice - I love the weather today (5 minutes ago)

Details The application must use the console for input and output. Users submit commands to the application. There are four commands. “posting”, “reading”, etc. are not part of the commands; commands always start with the user’s name. posting: -> reading: following: follows wall: wall

Don't worry about handling any exceptions or invalid commands. Assume that the user will always type the correct commands. Just focus on the sunny day scenarios. Don’t bother making it work over a network or across processes. It can all be done in memory, assuming that users will all use the same terminal. Non-existing users should be created as they post their first message. Application should not start with a pre-defined list of users. Exercise should be done either in Java or C#. Provide instructions on how to run the application.