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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.
more efficient and has better methods when working with integers
kata hint != kata suggestion
Thanks a lot for this comment. really helped me to find the issue after busting my head for hours.