Is there anyway better than memoization for this kata? I kept getting runner.codewars.io Host Error messages(not the time out msg designed to tell you to optimize your code), not sure if it is my code or the server. My RUBY code passed all the basic tests but does not show any result when running all test cases
Error msg: This error was caused due to an issue processing the web request, not because of an issue executing your code. Please try again.