Have you considered adapting the following? http://www.jsoftware.com/jwiki/Essays/Quicksort (Or any other comparison sort function.)
----- Original Message ----- From: Marshall Lochbaum <[email protected]> Date: Wednesday, August 17, 2011 12:36 Subject: [Jprogramming] Sort with a comparison function To: [email protected] > I have a list of things--specifically, ordinal numbers in Cantor > normalform--and an ordering relation that tells me whether the > difference of two > of them is positive, negative, or zero (analogous to *@-~ for J > numbers). Is > there an efficient J way to perform this sort? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
