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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.
Yes, it's O(n^2). No, you're thinking too much and in fact that's just total nonsense. It holds true even in psuedo-code form.
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Duplicate, not actionable.
Not an issue.
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I dunno his benchmarks ~10x faster than yours does.
My code had problems in dealing with numbers that are more than 4 digits long. There are no such numbers in example tests. I used 20000 and 1, with expected output (3, 10000, 21001): 1000, 10000, 10001.
Well, 8 kyu is for the simplest kata (or there'd be a 9 kyu rating).
There will always be beginner kata that seem alike. Just say hello again. :P
You're returning the return value of the push.
I don't think that's what you intend to do.
i'm too :( what's happen?
I also got confused by this one!