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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.
(why the fuck not any language has the same sample tests than the others... x/ )
will be handled soon...
Interesting problem, but the description was very unclear. I had to try a couple different things and see the errors just to understand what it was asking for.
At the very least, having more sample tests showing a range of desired results would make it easier to figure out what's being asked.