#!/usr/bin/perl

use strict;
use warnings;
use Set::Scalar;

# use Data::Dumper;

my @str1= qw(Poet Blake had a milky white cat He used to call it Pussy
+);
my @str2 = qw(Poet Blake had a white cat and used to call it Pussy);

my $s1= Set::Scalar->new(@str1);
my $s2 = Set::Scalar->new(@str2);

my $result = $s1*$s2;

print $result;

__END__

(Blake Poet Pussy a call cat had it to used white)
[download]

See Set::Scalar

Perhaps this helps. Best regards, Karl

Update: You wrote you are a teacher. So i think you can do the math by yourself ;-)

Regards, Karl, Earl of GuttenPlag.

P.S.: And diff might be a weapon too...

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.