] x=: 10,. 6 [EMAIL PROTECTED] 5
10 1
10 0
10 4
10 2
10 4
10 4
] i=: /: /:^:2"1&.|: x
0 1 2 3 4 5
i{x
10 1
10 0
10 4
10 2
10 4
10 4
ranking=: i.!.0~ { /:@/:
] j=: /: ranking"1&.|: x
1 0 3 2 4 5
j{x
10 0
10 1
10 2
10 4
10 4
10 4
----- Original Message -----
From: Roger Hui <[EMAIL PROTECTED]>
Date: Thursday, May 17, 2007 3:17 pm
Subject: Re: [Jprogramming] Multi sort
> > For boxed arguments, that's a bit more difficult, but I
> > could use numbers that sort the same way, for example
> > perhaps something like /:^:2"1&.|: (That would work for
> > a 2 dimensional array, but is probably not quite right for
> > higher dimensions.)
>
> /:^:2 does not handle ties correctly, but the
> following would:
> ranking=: i.!.0~ { /:@/:
> More efficient would be to use /: or \: on each
> column depending on whether the sort is up or down.
> See
> http://www.jsoftware.com/jwiki/Essays/Inverted_Table#grade_and_sort
>
>
>
> ----- Original Message -----
> From: Raul Miller <[EMAIL PROTECTED]>
> Date: Thursday, May 17, 2007 2:52 pm
> Subject: Re: [Jprogramming] Multi sort
>
> > On 5/17/07, Roger Hui <[EMAIL PROTECTED]> wrote:
> > > What if the argument is not numeric?
> >
> > I would use numeric placeholders.
> >
> > For character arguments, that's fairly simple -- I could
> > use a.i.]
> >
> > For boxed arguments, that's a bit more difficult, but I
> > could use numbers that sort the same way, for example
> > perhaps something like /:^:2"1&.|: (That would work for
> > a 2 dimensional array, but is probably not quite right for
> > higher dimensions.)
> >
> > Hypothetically speaking, the boxed mechanism would
> > also work for character args (though not so fast).
> >
> > And, if I wanted something fully general, I guess I'd have to
> > make myself a verb which distinguishes these types to
> > control an agenda.
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