I swear, it's putting them in a totally arbitrary (but deterministic) order.

[sniffnoy]

Something is very wrong when the best explanation seems to be "Uh... qsort isn't working?".

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[sniffnoy.livejournal.com]

I eventually turned it in in that form, unable to find a better explanation. I haven't taken another look at it since then, but the TA was equally puzzled...