Using the "Randomizing an Array" example from the Perl Cookbook, I threw together the following code. Does this help?
#!/usr/bin/perl -w
use strict;
my $gStr='This is my string';
my @gStrArr=split('',$gStr);
sub fisher_yates_shuffle
{
my $array = shift;
my $i;
for ($i = @$array; --$i;)
{
my $j = int rand ($i+1);
next if $i == $j;
@$array[$i,$j] = @$array[$j,$i];
}
}
fisher_yates_shuffle(\@gStrArr);
$gStr=join('',@gStrArr);
print $gStr,"\n";
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