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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 dunno, I had a bunch of easier 5 kyu katas then it popped up with this 4 kyu kata. This kata definitely took me way longer to solve than the 5 kyu ones I had worked on.
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Nvm my comment. Tests are still not there, but you can test by attempting over and over. Also didn't realize one of the tests was an empty string since that requirement was never mentioned in the description, that's why I was getting a null error.
Would you be able to explain more? I don't get how the quadratic formula can be applied to this problem. How did you use it to solve for n? It just seems like all these cubes and n-1 things make it a different thing.
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