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.
Sometimes the submission tests all pass and sometimes a single one fails. I'm assuming the arrays are randomly generated, so I'm not sure how to reproduce this. When it did fail, it was off by 1