[Neworleans-pm] Fwd: Perl Quiz of the Week #23
E. Strade, B.D.
estrabd at yahoo.com
Wed Sep 1 13:43:07 CDT 2004
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----- Original message -----
From: "Mark Jason Dominus" <mjd at plover.com>
To: perl-qotw at plover.com
Date: Wed, 01 Sep 2004 12:50:14 -0400
Subject: 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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