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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.
alright i was woundering if it was the unshift. thanks i will look at it again.... i felt so close this time lol
unshift moves all elements one position to the right, so your code is O(n2) there. Read this: https://medium.com/@ashfaqueahsan61/time-complexities-of-common-array-operations-in-javascript-c11a6a65a168
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