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MathGroup Archive 2002

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NestWhile

  • To: mathgroup at smc.vnet.net
  • Subject: [mg32519] NestWhile
  • From: Tom De Vries <tdevries at shop.westworld.ca>
  • Date: Fri, 25 Jan 2002 02:57:49 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

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 



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