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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.
oh damn ive learned so much from doing this, thx y all
The description mentions from a to b (inclusive). Ins't this answer wrong in that sense ?
You could do ".digits.reverse" instead of ".to_s.chars" too! :D
You wouldn't need to convert them back to integers later on if you do that.