Fails on the vector ,1 . 0 1 (0 }:@, E.) ,1 0 b > }: 0,b=: ,1 1
----- Original Message ----- From: "R.E. Boss" <[EMAIL PROTECTED]> Date: Wednesday, March 5, 2008 3:27 Subject: RE: [Jprogramming] leading edge of a boolean array To: 'Programming forum' <[email protected]> > 0 1 (0 }:@, E.) 0 1 0 1 1 0 1 1 1 0 1 0 > 0 1 0 1 0 0 1 0 0 0 1 0 > > b=:1e6 [EMAIL PROTECTED] 2 > > (b > }: 0,b)-: 0 1 (0 }:@, E.) b > 1 > > b=:i.0 > (b > }: 0,b)-: 0 1 (0 }:@, E.) b > 1 > > > R.E. Boss > > > > -----Oorspronkelijk bericht----- > > Van: [EMAIL PROTECTED] [mailto:programming- > > [EMAIL PROTECTED] Namens Roger Hui > > Verzonden: woensdag 5 maart 2008 6:52 > > Aan: Programming forum > > Onderwerp: Re: [Jprogramming] leading edge of a boolean array > > > > Fails on the empty list. Likewise Oleg's solution. > > > > (> 0 , }:) i.0 > > |length error > > | (>0,}:)i.0 > > ({. , 2 </\ ]) i.0 > > 0 > > > > > > > > ----- Original Message ----- > > From: Chris Burke <[EMAIL PROTECTED]> > > Date: Tuesday, March 4, 2008 21:47 > > Subject: Re: [Jprogramming] leading edge of a boolean array > > To: Programming forum <[email protected]> > > > > > Oleg Kobchenko wrote: > > > > ({. , 2 </\ ]) 0 1 0 1 1 0 1 1 1 0 1 0 > > > > 0 1 0 1 0 0 1 0 0 0 1 0 > > > > > > > > --- bill lam <[EMAIL PROTECTED]> wrote: > > > > > > > >> how to find the leading edge of a boolean array, > > > >> eg. for this array > > > >> 0 1 0 1 1 0 1 1 1 0 1 0 > > > > > > Also: > > > > > > (> 0 , }:) 0 1 0 1 1 0 1 1 1 0 1 0 > > > 0 1 0 1 0 0 1 0 0 0 1 0 > > > > > > (defined as firstones in script parts). ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
