I think the problem starts with the first problematic function...

Now you aren't making sense. According to your initial description of timing relations: 

65 sec for full code
15 sec for code MINUS "is_contained()" call (2nd "next" uncommented)

[download]
That really makes it look like "is_contained()" accounts for most of the run time, which I would expect, since that is the part that involves several more layers of function calls, with lots of min, max, sort, grep, etc going on (some of it obviously not needed). "Look into it", for sure.

To reiterate the question in my update: is there a way to move the sorting out of the innermost loop? E.g. might there be an appropriate "sort" on one or both of the lists that drive the two "foreach" loops in "scenario()", which would simplify operations inside the inner loop? Can anything be done as part of the outer foreach so that you don't have to do it repeatedly as part of the inner loop?

In reply to Re^5: Some code optimization by graff
in thread Some code optimization by roibrodo

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