In your Vector article you have the following code that I cannot follow.
P ([:; {~)^:(]`(S"_)) 20
I have gotten this far, but I don't really know how to parse the code.
(]`(S"_))
+-+-----------------+
|]|+-+-------------+|
| ||"|+-----+-----+||
| || ||+-+-+|+-+-+|||
| || |||0|0|||0|_||||
| || ||+-+-+|+-+-+|||
| || |+-----+-----+||
| |+-+-------------+|
+-+-----------------+
Can somebody clarify?
On Wed, Jul 24, 2013 at 9:21 AM, R.E. Boss <[email protected]> wrote:
> Another way is using quadratic squaring
>
> #;(;@:{L:0 1)~^:(5) 1;1 0
> 9227465
>
> which is more efficient:
>
> #;(;;{.)^:(42) 1;0 NB. Miller
> 1134903170
>
> ts'#;(;;{.)^:(42) 1;0'
> 1.2000234 3.7580992e9
>
> versus
>
> #; ([ ;@:{L:0 1~ [:,L:0 ])/(;@:{L:0 1)~^:(5 3 1) 1;1 0 NB. Boss
> 1134903170
>
> ts'#; ([ ;@:{L:0 1~ [:,L:0 ])/(;@:{L:0 1)~^:(5 3 1) 1;1 0'
> 0.88478818 3.770689e9
>
>
> In http://archive.vector.org.uk/art10501080 the rabbit sequence is used
> to describe L-systems in J.
>
>
> R.E. Boss
>
>
> (Add your info to http://www.jsoftware.com/jwiki/Community/Demographics )
>
>
> > -----Oorspronkelijk bericht-----
> > Van: [email protected] [mailto:
> [email protected]] Namens Raul Miller
> > Verzonden: dinsdag 23 juli 2013 18:18
> > Aan: Programming forum
> > Onderwerp: [Jprogramming] golden strings
> >
> > http://www.johndcook.com/blog/2013/07/23/golden-strings/
> >
> > 0.5#.|.0,;(;;{.)^:(6) 1;0
> > 0.709803
> >
> > :)
> >
> > --
> > Raul
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
--
(B=) <-----my sig
Brian Schott
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