Re^2: Fibonacci golf with one state variable


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Re^2: Fibonacci golf with one state variable

by aufflick (Deacon)

on Oct 05, 2008 at 11:54 UTC ( [id://715424]=note: print w/replies, xml )

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in reply to Re: Fibonacci golf with one state variable
in thread Fibonacci golf with one state variable

Hey that's neat! Of course the memory usage is far from constant, but great idea. Good use of say to save a few.

Only nitpicks are that you do have explicit initialisation and the first output is zero which is not quite right. Oddly, I get no output unless I tweak it to print to STDERR which is some strange buffering difference - no idea why.

++ for thinking laterally :)

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Re^3: Fibonacci golf with one state variable by JavaFan (Canon) on Oct 05, 2008 at 13:21 UTC
Well, I'd argue that not outputting zero isn't quite right. Usually, the Fibonacci sequence is defined as F(0) = 0; F(1) = 1; F(n) = F(n-1) + F(n-2), n > 1. See for instance Sloane: The On-Line Encyclopedia of Integer Sequences and Graham, Knuth and Patashnik in Concrete Mathematics. Eric Weisstein defines the sequence as starting with F(1) = F(2) = 1 and then states it's conventional to define F(0) = 0.	[reply]
Re^4: Fibonacci golf with one state variable by aufflick (Deacon) on Oct 06, 2008 at 03:13 UTC
Can't fault your references!	[reply]

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