#! perl
# Copyright (C) 2001-2006, The Perl Foundation.
# $Id: arriter.pl 16145 2006-12-17 18:44:04Z paultcochrane $

=head1 NAME

examples/benchmarks/arriter.pl - Iterator Benchmark

=head1 SYNOPSIS

    % time perl examples/benchmarks/arriter.pl

=head1 DESCRIPTION

Sets up an array and then loops over its contents, incrementing a
variable and setting hash values.

=cut

use strict;
use warnings;

use Data::Dumper;

# declaration of lexicals
my ( %ha,, $i, @k, @nk, $s );

# same as @k = qw( A B C D E F G H I J );
for ( $i = 0 ; $i < 10 ; $i++ ) {
    $s = chr( 65 + $i );
    push @k, $s;
}

# set up all 5 element permutations of qw( A B C D E F G H I J )
for my $e ( 0 .. 3 ) {
    for ( $i = 0 ; $i < 10 ; $i++ ) {
        for $s (@k) {
            my $nk = $s . chr( 65 + $i );
            push @nk, $nk;
        }
    }
    @k  = @nk;
    @nk = ();
}

my $j = 0;
for $s (@k) {
    ++$j;
    $ha{$s} = 1;
}
print scalar(@k), "\n";
print "$j\n";
print scalar keys(%ha), "\n";
print $ha{'AAAAA'};
print $ha{'ABCDE'};
print $ha{'BBBBB'};
print $ha{'CCCCC'};
print $ha{'HHHHH'};
print $ha{'IIIII'};
print "\n";

=head1 SEE ALSO

F<examples/benchmarks/arriter.pir>,
F<examples/benchmarks/arriter_o1.pir>.

=cut

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