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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! You really should.
That's the only challenge with this kata, figuring out the formulas. Other than that, it's just switch statements, if/else, variables, math, and rounding.
Duplicate issue
Pro tip: you can write code that writes code ;)