An OO-style solution: 
test.pl:
use hot_web;

use strict;

my $hot = new hot_web;
$hot->count("www.yahoo.com","200"); #set to 200
$hot->count("www.yahoo.com","+20"); #add 200
$hot->count("www.yahoo.com"); #increase by 1
$hot->count("www.google.com","3000"); #set 20 3000
$hot->count("www.google.com","+300"); #add 300
$hot->display;

hot_web.pm:
package hot_web;

use strict;

sub new {
    my $self = {};
    bless $self;
    return $self;
}

sub count {
    my $self = shift;
    my $url = shift;
    if (@_) {
        my $count = shift;
        if ($count =~ /^\+/) {
            $self->{$url} += $count;
        } else {
            $self->{$url} = $count;
        }    
    } else {
        $self->{$url} ++;
    }
}

sub display {
    my $self = shift;
    print "Hot Webs:\n";
    foreach (sort {$self->{$a} < $self->{$b}} keys %{$self}) {
        print "$_ appears: $self->{$_} time(s)\n";
    }
}

1;

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In reply to Re: count sort & output by pg
in thread count sort & output by mkent

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