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.
You don't return anything all you do is puts the result! If you remove the puts it should work perfectly :)
i think that may be your problem
are you returning them as doubles or as integers?
looks like ruby
which language are you using?