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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.
You should use
slice()to avoid thoseifs.Long to enumerate all the variants
If you have fourbonacci, would you add another if-condition?