Okay, so a co-worker of mine is telling me that he can solve the classic n-queens problem 200 times faster in Java than using Perl

I looked at his code, and it definitely doesn't look perl. So I just have this gut feeling that, while the perl solution may never completely beat the java solution in speed, that there's a really tight, perl way of solving this problem much faster

I really suck at these optimizations... so far I've tried and tried, and can't come up with anything that's significantly faster

Do you guys happen to have a perl solution ( that preferrably uses all the perl wizardry ) to this problem that's *really* fast?

By the way, I know it almost sounds like homework, but no. it isn't. I'm done with my school years for now :-)


In reply to Efficient N-Queen solution with Perl by lestrrat

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.