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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.
It's better to use #first and #last methods instead of [0] and [1].
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This comment is hidden because it contains spoiler information about the solution
This kata appears to pass no matter what code is used to define the method...