Does this guy have any idea how hard it is to come up with good interview questions? By posting the question and solution online (complete with an md5sum and ev

Does this guy have any idea how hard it is to come up with good interview questions? By posting the question and solution online (complete with an md5sum and everything!), he has ruined the question, and his employer will now need to spend a significant amount of time coming up with another way to evaluate candidates.