Groups > comp.lang.java.programmer > #8899

Re: prefix notation question

From	Chad <cdalten@gmail.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: prefix notation question
Date	2011-10-16 20:58 -0700
Organization	http://groups.google.com
Message-ID	<0142e456-9e9a-4f71-adaa-5ea9cad35427@u9g2000vby.googlegroups.com> (permalink)
References	<c865e53f-1e45-420b-aef3-cfb37216db89@13g2000prp.googlegroups.com> <BZGdnRzdc-qLOAbTnZ2dnUVZ_vydnZ2d@posted.palinacquisition>

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On Oct 16, 8:46 pm, Peter Duniho <NpOeStPe...@NnOwSlPiAnMk.com> wrote:
> On 10/16/11 8:15 PM, Chad wrote:
>
> > I'm supposed to write a program that calculates arithmetic expressions
> > using prefix notation. The one example our professor gave us is
>
> > (+ (- 6) (* 2 3 4) (/ (+ 3) (* 1) (- 2 3 1)))
>
> > Which evaluated sucessively becomes..
>
> > (+ (- 6) (* 2 3 4) (/ 3 1 -2)) //<----I don't see how he arrives at
> > this expression
> > (+ -6 24 -1.5)
> > 16.5
>
> > I don't see how he gets (+ (- 6) (* 2 3 4) (/ 3 1 -2)) from (+ (- 6)
> > (* 2 3 4) (/ (+ 3) (* 1) (- 2 3 1)))
>
> Ask your professor.

I did. He told me to come by during his office hours. I told him I
couldn't because of work. He hasn't responded back.

Chad

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Thread

prefix notation question Chad <cdalten@gmail.com> - 2011-10-16 20:15 -0700
  Re: prefix notation question Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-10-16 20:46 -0700
    Re: prefix notation question Chad <cdalten@gmail.com> - 2011-10-16 20:58 -0700
      Re: prefix notation question Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-10-16 23:38 -0700
      Re: prefix notation question Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2011-10-17 10:06 +0300
        Re: prefix notation question Chad <cdalten@gmail.com> - 2011-10-17 07:39 -0700
          Re: prefix notation question Chad <cdalten@gmail.com> - 2011-10-17 07:45 -0700
            Re: prefix notation question Chad <cdalten@gmail.com> - 2011-10-17 07:50 -0700
              Re: prefix notation question Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2011-10-17 18:10 +0300
                Re: prefix notation question Chad <cdalten@gmail.com> - 2011-10-18 15:30 -0700
                Re: prefix notation question Roedy Green <see_website@mindprod.com.invalid> - 2011-10-18 19:40 -0700
  Re: prefix notation question Roedy Green <see_website@mindprod.com.invalid> - 2011-10-18 19:36 -0700

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