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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.
In Ruby, I've got an imperfectly reliable solution - when I attempt it, it can sometimes pass only as few as 5 tests before a failure, but will sometimes pass 250 tests without failing. I don't know why this is - I can't tell what's going wrong in the tests that fail. Any thoughts?
In Ruby, I'm passing all the set tests but getting an error for the random tests, below - any thoughts on what's going wrong?
block in sum_book_sets'
each_index'sum_book_sets'
ref_ans'block (3 levels) in '
each'`block (2 levels) in
'