What does the word 'interation' mean? 'iteration' or 'interaction' ? --- Den man 26/4/10 skrev Roger Hui <[email protected]>:
> Fra: Roger Hui <[email protected]> > Emne: Re: [Jprogramming] Random Numbers with interation > Til: "Programming forum" <[email protected]> > 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 <[email protected]> > Date: Sunday, April 25, 2010 7:53 > Subject: Re: [Jprogramming] Random Numbers with interation > To: Programming forum <[email protected]> > > > 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 <[email protected]> > wrote: > > > > > Slightly more economical to do 1...@#50 or > 1...@$50 > > > instead of ?1e6#50 . > > > > > > > > > > > > ----- Original Message ----- > > > From: Don Guinn <[email protected]> > > > Date: Sunday, April 25, 2010 5:57 > > > Subject: Re: [Jprogramming] Random Numbers with > interation > > > To: Programming forum <[email protected]> > > > > > > > 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 > > > > <[email protected]> > 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 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > __________________________________________________ Bruger du Yahoo!? Er du træt af spam? Yahoo!Mail har den bedste spambeskyttelse, der findes http://dk.mail.yahoo.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
