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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.
I'd say it's pretty readable, except that maybe the logic can be extracted out to a separate function.
Now I really wouldn't want people to use tons of for loops and if conditionals for this, or otherwise the code length itself is making the readability suffer a lot! :P
it's CW not a production;P it should train your brain.