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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.
Nice solution, I wonder why the sum method doesn't work here?
Fair enough, I like your solution. I added score.split(':') to account for this anyway. Nice one
Since a single digit number is called at index 0 and 2, won't there be a problem when the score is above 10?