For double letters: 
if ($word =~ /(.)\1/) ...

[download]
All letters in alphabetical order (not regex): 
if (lc($word) eq join "", sort split //, lc($word));

[download]

antirice    
The first rule of Perl club is - use Perl
The ith rule of Perl club is - follow rule i - 1 for i > 1

In reply to Re: Re: Re: Regular Expression by antirice
in thread Regular Expression by optikool

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