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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.
haven't seen a comment about this yet, so: zero and one technically aren't prime, so the correct result should just be the entire array.
that's not the intent. it's supposed to drop the leading prime numbers, but as soon as it finds the first composite number, it just returns the rest of the array.
there's a different problem, though, which is that zero and one are not actually prime.
same...all day, though. internet connection is fine otherwise, so i know it's not just me.