- Interview project for applying iOS position.
- The product Tweeter allows users to post short messages limited to 50 characters each.
- Sometimes, users get excited and write messages longer than 50 characters.
- Instead of rejecting these messages, we would like to add a new feature that will split the message into parts and send multiple messages on the user's behalf, all of them meeting the 50 character requirement.
- Create an iOS application that serves the Tweeter interface. It will support the following functionality:
- a. Allow the user to input and send messages.
- b. Display the user's messages.
- c. If a user's input is less than or equal to 50 characters, post it as is.
- d. If a user's input is greater than 50 characters, split it into chunks that
- each is less than or equal to 50 characters and post each chunk as a separate message.
- e. Messages will only be split on whitespace. If the message contains a span of non-whitespace characters longer than 50 characters, display an error.
- f. Split messages will have a "part indicator" appended to the beginning of each section. In the example above, the message was split into two chunks, so the part indicators read "1/2" and "2/2". Be aware that these count toward the character limit.
- The functionality that splits messages should be a standalone function. Given the above example, its function call would look like:
- splitMessage("I can't believe Tweeter now supports chunking my messages, so I don't have to do it myself.")
- and it would return
- ["1/2 I can't believe Tweeter now supports chunking", "2/2 my messages, so I don't have to do it myself."]
- iOS >= 10
- Swift 4.0
- Application with text input and a list of messages.
- Split algorithm.
- Unit test for Split Message Function.
- Documentation.
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# 1: Remove redudant whitespaces/breaklines characters from input message.
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# 2: If the input message 's length is less than limit characters, we return the original one.
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# 3: Calculate total partial (temp estimation partial, we will fix it later at the render part ) then separate input message into array of words.
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# 4: For each partial we add word by word to it, if partial's length is over than limit, break loop then store current index where the last word is appended and move to another parital step. If still having remains words, we apply render part again else we return the expected result.
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Check implementation
splitfunction
- Some basic test cases can be found here.
