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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.
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Very nice solution. Its TOO simple! Very cool.
The solution shows the numbers in the array being doubled not squared.
Doesn't this return an array of the elements squared? I thought they were supposed to be doubled.
I think there's something wrong with this solution!