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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.
But the lead solution is far easier to understand, a lot shorter and becouse of that faster to read.
Coding is not just about writing fast code :)