Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

arg, I've been working on the following (brute force regexp engine) solution for a while, but I can't get it to work. It finds some matches, then gives up. I suspect there's some kind of optimization in the regexp engine making it think it's done. I figured I'd post it in case someone else wants to tinker with it.

use strict; use warnings; use re 'eval'; #use re 'debug'; use Data::Dumper qw( Dumper ); my $amount = shift; my @bills = (1, 5, 10, 20, 50, 100); my $choices = join "\n ", map { "( .{$_} (?{ my \%r = \%{\$^R}; \$r{$_}++; +{ \%r + } }) )*" } @bills; my $regexp = qr/ ^ (?{ +{} }) $choices $ (?{ push(@matches, $^R) }) (?!) /x; print($regexp, "\n"); our @matches; ('.' x $amount) =~ $regexp; print(Dumper(\@matches));
outputs
>perl 546453.pl 20 (?x-ism: ^ (?{ +{} }) ( .{1} (?{ my %r = %{$^R}; $r{1}++; +{ %r } }) )* ( .{5} (?{ my %r = %{$^R}; $r{5}++; +{ %r } }) )* ( .{10} (?{ my %r = %{$^R}; $r{10}++; +{ %r } }) )* ( .{20} (?{ my %r = %{$^R}; $r{20}++; +{ %r } }) )* ( .{50} (?{ my %r = %{$^R}; $r{50}++; +{ %r } }) )* ( .{100} (?{ my %r = %{$^R}; $r{100}++; +{ %r } }) )* $ (?{ push(@matches, $^R) }) (?!) ) $VAR1 = [ { '1' => '20' }, { '1' => '15', '5' => '1' }, { '1' => '10', '5' => '2' }, { '1' => '10', '10' => '1' }, { '1' => '5', '5' => '3' } ];
It's missing
{ '1' => '5', '5' => '2' '10' => '1' }, { '5' => '4' }, { '5' => '2' '10' => '1' }, { '10' => '2' }, { '20' => '1', },

In reply to Re: puzzle: how many ways to make $100 by ikegami
in thread puzzle: how many ways to make $100 by davidj

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others wandering the Monastery: (16)
    As of 2014-09-19 11:59 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (137 votes), past polls