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.
Use spoiler flag next time, please.
Don't get discouraged, I think it's good if you're able to write your own method.
Also now you've learned how to solve this challenge in another way. It's a win-win situation.