Here's a variant on Oleg's approach:
((#~ {~ [: <: +/[EMAIL PROTECTED])1,2>:/\]) d=: 10 7 5 6 7 1 9 8 2 4
10 7 5 5 5 1 1 8 2 2-- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
