"If you're interested in using any of this code in your applications, feel free to do so! You don't need to cite me or this website as a source, though I would appreciate it if you did. However, please don't plagiarize the code here by claiming authorship - that would just be dishonest. I also caution you that while I'm fairly confident that the code on this site is correct, I haven't mercilessly tested every line, and so there may be a lurking bug or two here."
Nice and simple; I like it! Also, you just made every introductory CS teacher cringe, unless they import all of these into their cheating detection system.
Wow, what a sad place has HN become that this kind of comment is getting upvoted. There are tons of interesting stuff in there, very exhaustively commented, and you say "some are interesting, lots are mundane" quoting a single goddamn example. Wouldn't linking the interesting ones be, like, more interesting? What a fucking weak attitude!
IMHO it doesn't fit at all with the other things. You can implement In-Place Mergesort or one of its variants by studying Wikipedia. Or you can just look up a nice implementation from the OPs site and port it to your favorite language. That said, this argmin/argmax thing does absolutely not fit.
It's just ONE example, and if it's really the most interesting thing HN has to say on this (it was the top comment when I responded) then it's truly a sad state of affairs. Those btw are as much tutorials as they are "nice implementations", there are lots of things pointed out in the comments that you won't easily find on Wikipedia.