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Re: Re: Re: (Golf) Reversing RPN Notation

by bobione (Pilgrim)
on May 21, 2001 at 20:46 UTC ( #82009=note: print w/replies, xml ) Need Help??

in reply to Re: Re: (Golf) Reversing RPN Notation
in thread (Golf) Reversing RPN Notation

Both output :   2 - 3 + 4   and   2 - (3 + 4)   are correct but the first one is better because "minimize the use of parentheses". It seems to be good.

Update: MeowChow points something right !! I was dreaming when I read his post, forget it :)

BobiOne KenoBi :)

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Re: Re: Re: Re: (Golf) Reversing RPN Notation
by MeowChow (Vicar) on May 21, 2001 at 20:55 UTC
    Uh, no, addition and subtraction are left-to-right associative, which means that:
    2 - 3 + 4 = -1 + 4 = 3 while 2 - (3 + 4) = 2 - 7 = -5
                   s aamecha.s a..a\u$&owag.print

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