I have been playing around with a script to figure out the point values of cribbage hands. This is the sub that I have come up with to count the number of fifteens (actually the points 2/15) I also have subs for pairs, and runs (I'll Tackle them later) 
#!/usr/bin/perl -w
use strict;
use warnings;

sub fifteens
{
    my $hand = shift;
    $hand =~ s/[SCHD]//g;
    $hand =~ s/[JQK]/10/g;
    $hand =~ s/A/1/g;
    my ( $c1, $c2, $c3, $c4, $c5 ) = split /,/, $hand;
    my $total = 0;
    # count the 2 card combinations that add up to 15
    $total += 2 if ( ( $c1 + $c2 ) == 15 );
    $total += 2 if ( ( $c1 + $c3 ) == 15 );
    $total += 2 if ( ( $c1 + $c4 ) == 15 );
    $total += 2 if ( ( $c1 + $c5 ) == 15 );
    $total += 2 if ( ( $c2 + $c3 ) == 15 );
    $total += 2 if ( ( $c2 + $c4 ) == 15 );
    $total += 2 if ( ( $c2 + $c5 ) == 15 );
    $total += 2 if ( ( $c3 + $c4 ) == 15 );
    $total += 2 if ( ( $c3 + $c5 ) == 15 );
    $total += 2 if ( ( $c4 + $c5 ) == 15 );
    # count the 3 card combinations that add up to 15
    $total += 2 if ( $c1 + $c2 + $c3 == 15 );
    $total += 2 if ( $c1 + $c2 + $c4 == 15 );
    $total += 2 if ( $c1 + $c2 + $c5 == 15 );
    $total += 2 if ( $c1 + $c3 + $c4 == 15 );
    $total += 2 if ( $c1 + $c3 + $c5 == 15 );
    $total += 2 if ( $c1 + $c4 + $c5 == 15 );
    $total += 2 if ( $c2 + $c3 + $c4 == 15 );
    $total += 2 if ( $c2 + $c3 + $c5 == 15 );
    $total += 2 if ( $c2 + $c4 + $c5 == 15 );
    $total += 2 if ( $c3 + $c4 + $c5 == 15 );
    # count the 4 card combinations that add up to 15
    $total += 2 if ( $c1 + $c2 + $c3 + $c4 == 15 );
    $total += 2 if ( $c1 + $c2 + $c3 + $c5 == 15 );
    $total += 2 if ( $c1 + $c2 + $c4 + $c5 == 15 );
    $total += 2 if ( $c1 + $c3 + $c4 + $c5 == 15 );
    $total += 2 if ( $c2 + $c3 + $c4 + $c5 == 15 );
    # See if all the cards add up to 15
    $total += 2 if ( $c1 + $c2 + $c3 + $c4 + $c5 == 15 );

    return $total;
} ## end sub fifteens

print "hand = A,2,3,4,5 \tTotal =", fifteens ( "A,2,3,4,5"), "\n";
print "hand = 5,5,5,J,5 \tTotal =", fifteens ( "5,5,5,J,5"), "\n";
print "hand = 6,7,8,9,5 \tTotal =", fifteens ( "6,7,8,9,5"), "\n";

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There must be a neater way... or is this the cleanest (which I doubt).

2006-03-31 Retitled by planetscape, as per Monastery guidelines
Original title: 'there has to be a better way'

In reply to calculating cribbage points by dracos

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