Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Was kind'a bored, so i worked on a perl solution. This should be much faster:

#!/usr/bin/perl use strict; use warnings; my $desired_postage = $ARGV[0] || 1.51; $desired_postage = int $desired_postage * 100; my @stamps = sort { $a <=> $b } grep { chomp; $_ < $desired_postage } map { int $_ * 100 } grep { ! /^#/ } <DATA>; my $exact = grep { $_ == $desired_postage } @stamps; print "Exact postage: " . $exact / 100 . "\n" if $exact; my $dim_max = 6; recurse( $desired_postage, [] ); sub recurse { my( $rest, $select ) = @_; if ( $rest == 0 ) { print $_ / 100 . " " for @$select; print "\n"; return; } return if @$select >= $dim_max; my @filtered = grep { $_ >= $rest / ($dim_max - @$select) and $_ <= $rest } @stamps; @filtered = grep{ $_ <= $select->[-1] } @filtered if $select->[-1] +; for my $stamp ( sort{ $b <=> $a } @filtered ) { recurse( $rest - $stamp, [ @$select, $stamp ] ); } return; }


Also i made integers of all values, because apearently on a Pentium IV 1.51 - 0.87 - 0.42 - 0.1 - 0.1 - 0.02 != 0

In reply to Re: How can I calculate the right combination of postage stamps? by Taulmarill
in thread How can I calculate the right combination of postage stamps? by brian_d_foy

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



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

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

How do I use this?Last hourOther CB clients
Other Users?
Others chanting in the Monastery: (3)
As of 2024-03-29 02:04 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found