thanks all! This works, and I am reading Perl cookbook.
-----Original Message-----
From: Jeff 'japhy/Marillion' Pinyan [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 10, 2001 10:44 AM
To: Jennifer Pan
Cc: [EMAIL PROTECTED]
Subject: Re: grep repetitive elements?
On Aug 10, Jeff 'japhy/Marillion' Pinyan said:
> my %freq;
> $freq{$_}++ for @list2; # create a hash of key -> frequency
>
> for (@list1) {
> print $freq{$_} if $freq{$_} > 1;
> }
Rather,
print $_ if $freq{$_} > 1;
--
Jeff "japhy" Pinyan [EMAIL PROTECTED]
http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/
http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002
**
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