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.
Not an issue.
You're right the description is not entirely correct, but neither is what you suggest. You do not have to construct and return a new list object. You can alter list a to be the desired output.
fixed
Thanks for the revision. Changed to MUST and clarified anything less than 1 should return an empty string without a newline ending.