It is NP-complete, so there's no way a super-efficient general
solution is going to emerge here. However, the evaluation of
any particular ordering doesn't require evaluating all possible
groupings of that ordering. You can merely start adding
stuff until an overflow occurs, switching to the next bag
as necessary. The "best" solution out of the possibilities
evaluated is the one that uses the least containers.
in reply to Re: Golf: Grocery Bagging
in thread (Golf) Grocery Bagging
Perl is buff enough to spin through several million
possibilities in realistic time, unless you're using a
version of Perl for Palm Pilot. I would submit that as long
as a Perl Golf program runs in finite time (even extremely,
exponentially long), the point is to make a minimally sized
program that produces the correct solution.