Why loop when you can make regex loop for you :) 

#!/usr/bin/perl -l

# http://perlmonks.org/?node_id=1173584

use strict;
use warnings;

my $sequences = "qwertyuiop asdfghjkl zxcvbnm";
my @threes;
push @threes, $1 while $sequences =~ /(?=(\w{3}))/g;
my $invalid = do { local $" = '|'; qr/@threes/ };

my $password ="asdf";

if( $password =~ $invalid )
  {
  print 'no sequences allowed!';
  }
else
  {
  print "password is okay";
  }

[download]

In reply to Re^2: Regular expression to check for qwerty sequence in a password by tybalt89
in thread Regular expression to check for qwerty sequence in a password by bradcathey

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