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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.
Thanks for the tip. I was wondering about my heuristic. I know that Heuristic algorithms need to give an answer that is below the actual path length, but I forgot that there will be occasions in this Kata where the actual cost is zero!
Following your tip I removed the heuristic, and also needed to do a little optimisation of my "find the lowest cost" search. It's still overkill, but at least it's working.
Hmm. I have an A* solution that is nice and quick, and passes the vast majority of tests, but occasionally fails to produce the right answer, and when it fails the given answer is always 2 higher than the correct answer!
I've been going crazy trying to work out what the common factor is on the failed tests. Why would it always be 2 out?!