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.
Thank you. I have now solved it in one pass, without changing the input.
It is a nice solution,
but you are changing the input and that can be a dangerous assumption