Good, and there is at least one other nice way to do it.
Matthew Brand wrote: > u =. ~.@, > n =. ~.@(e.#[) > 1 2 3 4 u 3 4 5 6 > 1 2 3 4 5 6 > 1 2 3 4 n 3 4 5 6 > 3 4 > > > > 2009/7/16 Kip Murray <[email protected]>: >> The following is easy but interesting. >> >> A "set" is a numeric vector without repetitions. Provide definitions for the >> union u and intersection n of two sets: >> >> 1 2 3 4 u 3 4 5 6 NB. elements of one or the other >> 1 2 3 4 5 6 >> >> 1 2 3 4 n 3 4 5 6 NB. common elements >> 3 4 >> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
