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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.
add 8 or 2, maybe...? ;)
kata hint != kata suggestion
The kata has been updated recently, all the negative values have been removed from all languages versions, but one has been omitted in Javascript. Sorry for the inconvenience, I've just published a new fork but it needs to be approved.