#!/usr/bin/perl
# This is one of my favorite algorithms, put to perl use.
# Run it on command line with no arguments to see what i
# mean.  Feed it numbers for a bit of a spoiler.
# NOTE: start with small numbers(500,1000,etc) as it's not optimized!


$==$ARGV[0]||67;($j,@p)=(0,1,2);while($=>=@p-1){$h=1;{$p=$h**2+$h+$p[$
+j];
@p=b(@p,$p)if i($p);$h++;redo if $h<$p[$j]-1;}$j++}shift @p;unless(@AR
+GV){
@f=@p[1,2,6,23,24,25,27];@f=($f[2]+$f[3],$f[4],$f[1]+$f[6],$f[0]+$f[5]
+);
$f[$_]=chr($f[$_])foreach(0..$#f);$.=join '',@f;$..=$/;die $.}foreach(
+@p){
print "$_ ";print "\n" unless(++$t%10)}print "\n";sub i{($%,$*,$n)=
(+shift,1,1);{($n-- and last) unless $%%$p[$*];last if $p[$*]**2>$%-1;
$*++ and redo}$n}sub b{$_{$_}++ foreach(@_);sort{$a<=>$b}keys %_}

#nuf evah,
#jynx
#
# PS please tell me what you think, areas of improvement, etc...

[download]

In reply to nothing as it seems... by jynx

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.