I would be happy to let Roger implement this for J, just as he has already implemented very good random number generators and factoring algorithms.
However, for my purposes, "grade" is usually more useful than "sort". I don't mean this as a put-down. Any real breakthrough in sorting is potentially of great benefit to us all, but not necessarily at the level of a J application. The power of the language is in encapsulating high-level concepts, not in the low-level details of the implementation of a well-known concept like sorting. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
