Also: uniq=: i.~ = i:~ x=: 3 1 4 1 5 9 2 6 5 3 5 8 9 7 9 unique x 0 0 1 0 0 0 1 1 0 0 0 1 0 1 0 uniq x 0 0 1 0 0 0 1 1 0 0 0 1 0 1 0
----- Original Message ----- From: "Sherlock, Ric" <[EMAIL PROTECTED]> Date: Tuesday, June 12, 2007 2:56 pm Subject: RE: [Jprogramming] Finding unique strings in a box > Others have provided solutions for the "unique" that you requested. > Here is a solution that gives a boolean list of all the unique (occur > exactly once) elements. > unique=: [:-. ]e. -.@:~: #] > unique box > 0 0 1 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
