Also, borrowed from http://rosettacode.org/wiki/Hailstone_sequence#J
hailseq=: -:`(1 3&p.)@.(2&|) ^:(1 ~: ]) ^:a:"0 Examples: hailseq 4 4 2 1 hailseq 5 5 16 8 4 2 1 This is similar to the collatz^:a: mentioned in the wiki page. -- Raul On Thu, Oct 25, 2012 at 5:44 AM, Brian Schott <schott.br...@gmail.com> wrote: > http://www.jsoftware.com/jwiki/Essays/Collatz%20Conjecture > > On Thu, Oct 25, 2012 at 5:12 AM, Stefan Stankovic > <anonimnist...@gmail.com> wrote: >> I have just started learning J and I think the language is wonderful. It is >> breathtaking. >> >> I have a question about a basic thing-how can I create a monad (preferably >> tacit) which will, given input x,provide a list of numbers which contains >> the Collatz seqyence for the given x? Thanks in advance. > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
