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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.
Template literals FTW
Very neat.
Nice, so its comparing the Unicode values under the hood.
This solution has a time complexity of O(n) which makes it the most efficient for larger data sets.