Re: NestWhile
- To: mathgroup at smc.vnet.net
- Subject: [mg32542] Re: NestWhile
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Sat, 26 Jan 2002 04:08:03 -0500 (EST)
- References: <a2r3ih$9m8$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Tom, NestWhileList[f,7,(#!=1&)] {7,22,11,34,17,52,26,13,40,20,10,5,16,8,4,2,1} -- Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "Tom De Vries" <tdevries at shop.westworld.ca> wrote in message news:a2r3ih$9m8$1 at smc.vnet.net... > Hello! > > I know this is a simple question, hope someone can help me out..... > > If I define the function > > f[n_] := If[EvenQ[n], n/2, 3n + 1] > > > I can then apply NestList and generate a nice number loop...... > > NestList[f, 7, 23] > > I want to use NestWhileList and stop when the generated number is a 1. How > do I do that? > > Thanks for the help, > > Sincerely, > > Tom De Vries > >