SPUG: not a perl question

Mark Mertel mark.mertel at yahoo.com
Wed Apr 8 15:13:26 PDT 2009

I got asked to write an algorithm generating all possibile parenthetical permutations of a string containing a simple arthmetic experssion (+,-,*). Ran out of time, but ran across the catalan number sequence as the way to do it. Has anybody done this in perl? 
Mark Mertel
mark.mertel at yahoo.com

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