Loading collection data...
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.
I think the callback makes the code is longer
As a newbie in js, i truly think this solution makes more sense!
I found an edge case that the test suite doesn't includes the test for in middle elements; my solution passed the tests but is wrong because of that edge case.