On Wed, Mar 5, 2008 at 6:05 AM, 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 > > I want the result as > 0 1 0 1 0 0 1 0 0 0 1 0
I recommend this: ]a =: 0 1 0 1 1 0 1 1 1 0 1 0 0 1 0 1 1 0 1 1 1 0 1 0 (>|.!.0) a 0 1 0 1 0 0 1 0 0 0 1 0 Ambrus ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
