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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 saw some floats provided, so I chose to reject strings rather than select integers.
I'd assume that when we remove all the strings, the only things left are the integers.
Technically wrong, as the specs said: "remove all the strings". The tests are not good enough to catch that though.