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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.
Your code fails when there are tests with 2 or more lowest numbers :)
Anyways, 'looks like you solved it'
Not a kata issue, it's a problem with your code:
See the sample test:
titleCase('the quick brown fox')there is no second argument there and you try to split it without checking it.