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Reverse Polish Notation http://luminouspath.de:80/forum/viewtopic.php?f=30&t=1340 |
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Author: | Thórva [ 2010 Oct 13 (Wed) 12:38 pm ] | ||||||||||||||||||||||||||||||||||||
Post subject: | Reverse Polish Notation | ||||||||||||||||||||||||||||||||||||
Reverse Polish Notation, a k a "postfix notation", is pretty easy. Normally, you might express the number 18 like this:
where you put the operator in between its arguments. RPN just puts the operator at the end, so 9 + 9 becomes
or 2 x 3 becomes
Easy peasy! So if you're 21 years old, you might express that in RPN by writing something like
or similar. Keep that in mind! |
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