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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.
nice, was looking for an efficient implementation
Elegant and readable.
Reminded me of The Book.
This comment is hidden because it contains spoiler information about the solution
My current Haskell solution only iterates the list once, performing 2 additions per element, but still seems to timeout. I am having a hard time imagining a faster algorithm so I have to ask:
I'll put my solution in a spoiler tagged reply to this message