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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.
just return the indexed letter from the 'original' passed string.
At the first 100, the cash register already has 25, 50 bills which is sufficient to return to the ticket buyer who has a 100 bill.