Loading collection data...
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.
Does this deserve 4kyu? It's fearly easy, basically translate a formula into whatever language you're using...
I don't really get why this would be a best prectices too. The code is unreadable, complexity is usual, but there's an overhead of memory use.