Very good kata, but I had an issue with the Java one. I was able to run the last test (biggest number) in my test cases but when I try to submit final solution I got the out of computation time error. My algo has the same complexity as the ones from other people. I solved this issue trying and trying to submit until (I thought) server was less busy (more or less 30 minutes with me tweaking the algo). I don't know if it is a desired behaviour from the author, so I posted here.