You could speed things by shuffling @words right before the two inner loops.

foreach my $i (1..$cards) {
    my %seen;
       .
       .
       .
    for my $x (1..4) {
        for my $y (1..4) {
            my $word;
            while (1) {
                my $index = rand(@words);
                $word = $words[$index];
                if (!$seen{$word}) {
                    $seen{$word}++;
                    last;
                }
            }
              .
              .
              .

[download]
 becomes:
use Algorithm::Numerical::Shuffle qw /shuffle/;
   .
   .
   .
foreach my $i (1..$cards) {
       .
       .
       .
    @words = shuffle @words;
    for my $x (1..4) {
        for my $y (1..4) {
            my $word = shift @words;
              .
              .
              .

[download]

HTH,
Charles K. Clarkson
Clarkson Energy Homes, Inc.

In reply to Re: Re: Bingo Challenge by CharlesClarkson
in thread Bingo Challenge by Matts

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