In connection with this question which is now "on hold", there is the message "If this question can be reworded to fit the rules in the help center, please edit the question or leave a comment." Although I think the question has already been adequately edited to get it re-opened, I seem to be the only one voting for that. Is it appropriate for anyone other than the author to edit the question even more? (It risks mis-stating the author's intentions.) I happen to think it's actually a nice code-challenge problem, and would like to see what other solutions people might have.