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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.
The information about the difference between the correct result and user answer would be helpful. You could also provide a function skeleton and not force the user to write it by himself.