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Re: Re: Detecting transpositions

by BrowserUk (Patriarch)
on Aug 06, 2003 at 22:00 UTC ( [id://281609]=note: print w/replies, xml ) Need Help??


in reply to Re: Detecting transpositions
in thread Detecting transpositions

That really helps. Kind of like a lazy evaluating ST.

The problem remains O9n*n!), but for n-1 * n! passes the comp() comes down to

return $cache{$_[0]}{$_[1]} if exists $cache{$_[0]}{$_[1]};

Which is a huge time saver (provided I don't run out of memory:).

Thanks.


Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong." -Richard Buckminster Fuller
If I understand your problem, I can solve it! Of course, the same can be said for you.

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