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Re: About elisp, Lossing data after sort


From: htbest2000
Subject: Re: About elisp, Lossing data after sort
Date: 13 Mar 2007 22:25:19 -0700
User-agent: G2/1.0

On Mar 14, 12:39 pm, Barry Margolin <address@hidden> wrote:
> In article <address@hidden>,
>
>
>
>  "htbest2000" <address@hidden> wrote:
> > Hi,
>
> > I am using "GNU Emacs 22.0.94.1 (i386-mingw-nt5.0.2195) of
> > 2007-02-24 on NEUTRINO"
>
> > I'm writting a function to generate a series of random numbers,
> > it seems work fine alone. But the data always lost after sort,
> > following is the code:
>
> > (defun random-list (n)
> >   "return a list with random numbers from [0,N), length of N"
> >   (let ((i 0) (list nil))
> >     (while (< i n)
> >       (progn (setq list (cons (random n) list))
> >         (setq i (+ 1 i))))
> >     list))
>
> > (defun main (n)
> >   "program entry"
> >   (let ((list nil))
> >     (setq list (random-list n))
> >     (princ (format "%S\n" list))  ;print list
> >     (sort list '<)
>
> Change that to:
>
>       (setq list (sort list '<))
>
> >     (princ (format "%S\n" list))  ;print same again
> >     nil
> >     ))
>
> > For example, running:  (main 10)
>
> > the result:
> > (9 2 8 4 7 8 1 1 9 3)
> > (9 9)
>
> >  What's wrong in my code? Thanks
>
> --
> Barry Margolin, address@hidden
> Arlington, MA
> *** PLEASE post questions in newsgroups, not directly to me ***
> *** PLEASE don't copy me on replies, I'll read them in the group ***

Thanks in advance!



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