Loading collection data...
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.
I'm trying the recursive approach as well, so I'm wondering did you used static instance variable to keep the incremented value or? I cannot seem to pass the tests, even though for all of the numbers it seems to be working...
Not a kata suggestion ~~