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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.
super clever, nice!
It's still better than your solution because it fails fast in case of invalid input.
And what about ArrayIndexOutOfBoundsException?)
Smart
This comment is hidden because it contains spoiler information about the solution
I like this solution a lot.