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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.
Awesome. Thanks for the fun kata!
This comment is hidden because it contains spoiler information about the solution
Unfortunately it seems this is all about the data structure that you use as opposed to an actual solution. Native scala collection types such as ListBuffer timed out for me, however if you use an Array as you would in Java it works, granted you have the correct logic. Disappointing.