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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.
thanks for the explanation!
this was hard for me as a beginner, took me like 5 hours to figure out
I love how this kata made me learn so much about ways to add the elements in an array and get rid of duplicates in an array, thank you sensei @jhoffner