list1=: (i. 10e6) list2=: (1e6 + i. 9e6)
10 (6!:2) 'list2 e. list1' 0.0412252 10 (6!:2) '(1e6 + i. 9e6) e. (i. 10e6)' 0.20568 i5-4300U @ 1.90/2.5 GHz Taking the list creation out of the timing makes a significant difference. On Wed, Dec 7, 2016 at 9:51 AM, Henry Rich <[email protected]> wrote: > 6!:2 '(i. 10000000) i. (1000000 + i. 9000000)' > 0.121106 > > this is i3-3120M at 2.5 GHz (2012, Ivy Bridge architecture). > > Henry Rich > > > On 12/6/2016 3:44 PM, 'Pascal Jasmin' via Programming wrote: > >> the in function in q is e. in J. >> >> >> >> >> ----- Original Message ----- >> From: Björn Helgason <[email protected]> >> To: Programming forum <[email protected]> >> Sent: Tuesday, December 6, 2016 3:41 PM >> Subject: Re: [Jprogramming] in function which beats the benchmark >> >> in =. [: I. E. >> >> 1 3 in 4 2 1 3 4 6 1 3 >> 2 6 >> >> >> >> On 6 Dec 2016 09:46, "Abi" <[email protected]> wrote: >> >> Hi, >> I am new to J. Can someone implement the *in* function. >> I have tried various ways but cannot get to beat the benchmark of ~130 ms. >> >> list1: 0 til 10MM >> list2 : 1M till 10MM >> >> list2 *in* list1 >> >> The line above shows the in operator. >> >> Thanks. >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
