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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.
hey thx for help and sorry for late reply
btw is this final solution?
That'll be a different problem and what do you think should be returned there? It's missing "m", "n", "q" and "t"
what if we have array where 2char are missing continusly like this one ['k','l','o','p','r','s','u']
if anyone know how to solve this pls help