My submission for the most outlandish/outrageous solution: minors=: 1&(|:\.)"2^:2 det=: -/ .* (<0 1) |: det minors (* =@/:) 3 1 4 1 5 9 180 540 135 540 108 60
As usual, when referring to minors, the obligatory Green Mug link: http://www.jsoftware.com/jwiki/DavidMitchell ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
