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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.
nice kata,It was difficult for me but I learned a lot.
One question: Does Codewars accept or recognizes js method toSpliced()? I needed to change it on other one...