On Nov 7, 2007 11:29 PM, Arie Groeneveld <[EMAIL PROTECTED]> wrote: > but there's a flaw: > > 7 0 pattern dat > > 7 0 p2 dat > |length error: p2 > | 7 0 p2 dat
Oops. You are right, there is a flaw... Thank you! So here is my new fixed version then :) p4=:( (#~ (+:_1|.]) @ (=1|.<:) ) @ I. @ E.~$/ )~ It seems to be slightly better in terms of performance.. 6!:2 '5 0 pattern in' 0.0161652 6!:2 '5 0 patRM17 in' 0.0152835 6!:2 '5 0 pat172 in' 0.0297362 6!:2 '5 0 p4 in' 0.00920815 ..and I might be wrong, but even with "bad" short patterns (thank you for pointing me at this issue with the length of the pattern differences, by the way!) 6!:2 '1 0 pattern in' 0.0169181 6!:2 '1 0 patRM17 in' 0.0168586 6!:2 '1 0 pat172 in' 0.0283919 6!:2 '1 0 p4 in' 0.0156168 NB. the running time greatly depends on the data itself - with different "in"s you'll get slightly different results.. PS But I am sure there should be some better, shorter and faster solution anyway ;) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
