Thank you. Will try it later on the data.
Nick
Am 11.12.2013 20:16 schrieb "Kenneth Lettow" <[email protected]>:
> How about
>
> a=: 1 2 3 4 5 6
> b=: 14 3 2 5 6 2 1 1 2 3 4 2 3
> +/"1 (a=/b)
> 2 4 3 1 1 1
> {:"1 /:~(~.,#)/.~(#a)-.~a i. b
> 2 4 3 1 1 1
> NB. make it a verb
> doit=: 4 : '{:"1 /:~(~.,#)/.~(#x)-.~x i. y'
> a doit b
> 2 4 3 1 1 1
> NB. larger args
> a=: >: i.100000
> b=: ?100000000$200000
> a doit b
> 516 504 497 519 505 501 498 495 485 495 503 534 500 508 482 496 495 512 518
> 558 484 491 487 527 497 510 490 477 491 474 506 475 457 461 426 ...
> ts=: 6!:2,7!:2@] NB. time & space
> ts'a doit b'
> 8.0017 3.84198e9
>
>
>
>
> On Wed, Dec 11, 2013 at 12:11 PM, Ni Bo <[email protected]> wrote:
>
> > Hi,
> >
> > I'm using the data off the kaggle competition to learn some j.
> >
> > This simple code works for these short strings:
> > a=:1 2 3 4 5 6
> > b=:14 3 2 5 6 2 1 1 2 3 4 2 3
> > +/"1 (a=/b)
> > 2 4 3 1 1 1
> >
> > But if I try it for longer strings #a 250 and #b 1 000 000 I get out of
> > memory.
> >
> > Can you please help me with a better way?
> >
> > Nick
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
>
>
>
> --
> *Kenneth Lettow*
> *Director of Web Analytics and Market Intelligence*
> *ThomasNet.com*
> Five Penn Plaza, 8th Floor
> New York, NY 10001
> *: [email protected]
> *(*: 212.290.8713
> www.thomasnet.com
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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