Do you know where your variables are? PerlMonks

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 Need Help??
This is the Euclidean algorithm for finding the Greatest common divisor between two numbers. I thought I'd throw a bit of my own code into the fray. The first one uses a loop, the second uses recursion. Could someone benchmark this for me?
```#!/usr/bin/perl -w

print "GCD: " . GCD( 45, 5 ) . " RecGCD: " . RecGCD( 45, 5 ) . "\n";

#Assumes \$A is the largest number
sub GCD
{
\$A = shift;
\$B = shift;
\$R = 1;

while ( \$R != 0 )
{
\$R = \$A % \$B;

if ( \$R == 0 )
{
return \$B;
}

\$A = \$B;
\$B = \$R;
}
}

#Assumes \$A is the largest number
sub RecGCD
{
\$A = shift;
\$B = shift;
\$R = 0;

\$R = \$A % \$B;

if ( \$R == 0 )
{
return \$B;
}

RecGCD( \$B, \$R );
}

--=Lolindrath=--

In reply to Re: Recursion: An example of Looping and Recursion by lolindrath

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