[Jprogramming] Random Numbers with interation

[Bo Jacoby]

What does the word 'interation' mean? 'iteration' or 'interaction' ?

--- Den man 26/4/10 skrev Roger Hui <rhui000 at shaw.ca>:

> Fra: Roger Hui <rhui000 at shaw.ca>
> Emne: Re: [Jprogramming] Random Numbers with interation
> Til: "Programming forum" <programming at jsoftware.com>
> Dato: mandag 26. april 2010 00.29
> There are other situations where the
> expression I suggested
> is much more economical than the one you used.  For
> example:
> 
>    ts=: 6!:2 , 7!:2@]
> 
>    10 ts '1e6 ?@$ 2'
> 0.0029846 1.04934e6
>    10 ts '?1e6 $ 2'
> 0.0132888 5.24352e6
> 
> i.e. factor of 4 in time, factor of 5 in space.
> 
> 
> 
> ----- Original Message -----
> From: Don Guinn <donguinn at gmail.com>
> Date: Sunday, April 25, 2010 7:53
> Subject: Re: [Jprogramming] Random Numbers with interation
> To: Programming forum <programming at jsoftware.com>
> 
> > True. There is a lot that could be done to make it
> faster. But 
> > it was so
> > much faster I didn't bother. And as you say, if you
> can't half 
> > the time,
> > it's not worth doing. But I did try it. Looks like
> maybe 20% faster
> > 
> > On Sun, Apr 25, 2010 at 9:18 AM, Roger Hui <rhui000 at shaw.ca>
> wrote:
> > 
> > > Slightly more economical to do 1e6?@#50 or
> 1e6?@$50
> > > instead of ?1e6#50 .
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: Don Guinn <donguinn at gmail.com>
> > > Date: Sunday, April 25, 2010 5:57
> > > Subject: Re: [Jprogramming] Random Numbers with
> interation
> > > To: Programming forum <programming at jsoftware.com>
> > >
> > > > How about 0.07 seconds.
> > > >
> > > >    6!:2
> '(1!:2&2)|."1]10{.\:~(>:~.z),.~ 
> > #/.~z=.?1e6#50'> > 15 20400
> > > >  8 20340
> > > > 46 20287
> > > > 13 20278
> > > > 33 20249
> > > > 39 20220
> > > > 18 20219
> > > > 29 20206
> > > > 25 20197
> > > >  9 20166
> > > > 0.0658392
> > > >
> > > > On Sun, Apr 25, 2010 at 7:36 AM, smandula
> > > > <smandula at idirect.com>
> wrote:
> > > >
> > > > >
> > > > > Thank you kindly for your reply.
> > > > > The statement of one million is an
> example, could be
> > > > 1,000  or 50,000
> > > > > iterations.
> > > > > The random numbers being tested could
> be 1 to 50, or 1 to 100
> > > > >
> > > > > I have a basic program whereby I enter
> the maximum iterations,
> > > > in the
> > > > > example 1,000,000
> > > > > and a time clock starts, and a counter
> starts counting up to
> > > > the required
> > > > > 1,000,000 intervals.
> > > > >
> > > > > Once, done the time duration shows, in
> my case 17 minutes, and
> > > > a list of 10
> > > > > highest occurrences
> > > > > for these random numbers. i.e.
> > > > > number 29     occurrences 
> 204,984
> > > > > number 26     occurrences 
> 204,855
> > > > > number 40     occurrences 
> 204,732
> > > > > number 17     occurrences 
> 204,629
> > > > > Number  1     occurrences 
> 204,480
> > > > >
> > > > > I would appreciate any input from the
> forum, especially for
> > > > faster times
> ----------------------------------------------------------------------
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> 

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