[Kc] Perl Quiz of the Week #23
Garrett Goebel
garrett at scriptpro.com
Wed Sep 1 13:21:46 CDT 2004
From: Mark Jason Dominus [mailto:mjd at plover.com]
Sent: Wednesday, September 01, 2004 11:50 AM
To: perl-qotw at plover.com
Subject: [Retrieved]Perl Quiz of the Week #23
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Write a program, 'parens', which gets a command line argument, n', which is
an integer. The program should print all the properly-balanced strings of
parentheses of length 2n. For example, given the argument '3', the program
should print these five lines:
((()))
(()())
(())()
()(())
()()()
in some order. (The order is not important.)
For the argument '1'; the output should be:
()
and for argument '4', the output should be:
(((())))
((()()))
((())())
((()))()
(()(()))
(()()())
(()())()
(())(())
(())()()
()((()))
()(()())
()(())()
()()(())
()()()()
in some order.
[ ADMIN: I'm still hoping someone will step forward to write a report
about expert quiz #22. - MJD ]
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