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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.
That's a common feeling, it's okay to feel that. Just remember: you aren't stupid, and you weren't. Sometimes a one's mind can play tricks and block a way to the solution, even the simplest soulutions. But now you've made it, you've learned something new. Cheers! :)
i feel so stupid right now
this is acc realy easy to read ,why would we need to debug this
I think your solution is way less efective, and in this top rated solution is problem with creating String s (it's redundant) we should just return new string from substring and that is it. Clear effictient and without redundancy :).
Nice to debug :)