Sat, 27 Mar 2004

Counting Fibonacci numbers

I need to stop this silliness. Couldn’t sleep, so I got up early and played with perl and Fibonacci numbers some more.

The latest incarnation prints the n-th Fibonacci number where n is passed as an argument. Here, n is 1000:

perl -MMath::BigInt -e '$b=new Math::BigInt 1;($a,$b)=($b,$a+$b)while--$ARGV[0];print"$b\n"' 1000

That’s assuming Fibonacci numbers begin with one instead of zero. I’ve seen them described both ways. Is zero a Fibonacci number?

[/programming] [link]

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