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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.
I'm trying to convert number to string to match the test, I used every way on earth to convert it and it's only giving me binary numbers witch never passes
please reCheck the test envieronment, and convert the last answer to number instead of string.