comment on

Took a while to dig up ... i think i wrote this in early 1997:

#!/usr/local/bin/perl

#################################################
# hanoi.pl
# translated from C++ to Perl by Jeff Anderson
# original C++ code by Brenda Parker
#################################################

#recursive function
sub Hanoi {
    local($number, $from, $to, $aux);
    ($number, $from, $to, $aux) = @_;

    if ($number == 1) {
        print "Move 1 from $from to $to<BR>";
    }
    elsif ($number != 0) {
        &Hanoi($number-1,$from,$aux,$to);
        print "Move $number from $from to $to<BR>";
        &Hanoi($number-1,$aux,$to,$from);
    }
}
        
#this library contains the function &GetFormInput which reads
#and parses the form data
require('libs/forms-lib.pl');


#read input from the form
%input = &GetFormInput();

print "Content-type: text/html\n\n";

$number = $input{'pegs'};

unless ($number =~ /^[0-1]?[0-9]$/) {
    print "Numeric, not alpha-numeric!<BR>";
    exit;
}
    

print <<"EOM";
<HTML>
<HEAD>
<TITLE>Towers Result</TITLE>
</HEAD>
<BODY>
EOM

if ($number < 1) {
    print "You are really cruel, zero pegs. Go away.<BR>";
} elsif ($number > 15) {
    print "I said 15 is the max, go tie up your own processor!<BR>";
} else    {
    print "For $number pegs:<P>";
    &Hanoi($number,'A','B','C');
}

print <<"EOM";
</BODY>
</HTML>
EOM
[download]

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

In reply to Re: Worst thing you ever made with Perl by jeffa
in thread Worst thing you ever made with Perl by Juerd

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