J is unable to determine the inverse of f or h2d.
--- June Kim <[EMAIL PROTECTED]> wrote:
> f=:[ #. '0123456789ABCDEF' i. ]
> h2d=:16&f
> h2d 'FF'
> 255
> h2d^:_1 ] 255
> |domain error
> | h2d^:_1]255
>
> Why did domain error occur here? Are there rules
> that I am missing?
>
> 2006/9/26, June Kim <[EMAIL PROTECTED]>:
> > Hello
> >
> > Base M and N are given, which are any integer
> number between 2 and 16
> > inclusive. Do the base conversion on a given
> number(in string form)
> > from base M to base N.
> >
> > My quick trial follows:
> >
> > d=:'0123456789ABCDEF'
> > fromM=: [ #. d i. ]
> > toN=:d {~ 13 : 'x�. ^:_1 y'
> > MN=: ([: {: [) toN ] fromM~ [: {. [
> >
> > 16 2 MN 'FE'
> > 11111110
> > 8 16 MN '732'
> > 1DA
> >
> >
> > Could you propose a pure tacit version, or more
> elegant, shorter one?
> > I bet there are better ones than mine, as always.
> >
> > June
> >
>
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