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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Input "-10" should be a positive Number... how? Same with "-30", there are some errors in the tests?! I got the same Numbers but negative - as in the instructions but can't complete this challenge.
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ah got it, had a "System.out.println" there as a control value
Does your solution print anything to console? Do you have any debug logs in your solution? If yes, please see this paragraph.
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