Hi Davis

You didn't tell us what exactly needs to be optimized.

NP hardness depends largely on this question.

FWIW have a look at "First Fit Decreasing" algorithm, it has a complexity of n * log n and guarantees a solution not worse than 3/2 of the optimum of the "Bin Packing Problem" (even 11/9 asymptotically)

This should be good enough in most cases.

BTW it's not "Knapsack" since you are not trying to maximize any second weight function of the packed items. They have a size but no additional cost value.

HTH :)

Cheers Rolf

(addicted to the Perl Programming Language and ☆☆☆☆ :)

In reply to Re: Computer science Problem - single dimension bin packing ("First Fit Decreasing") by LanX
in thread Computer science Problem - single dimension bin packing by davis

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