Perhaps some trivial unit tests would be helpful..... 
die "fact is broken"  unless fact(5)    == 120;
die "fact2 is broken" unless fact2(5,1) == 120;
die "fact3 is broken" unless fact3(5)   == 120;

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Update: added second arg to fact2. (thanks YuckFoo)

-Blake

In reply to Re: Factorial algorithm execution time by blakem
in thread Factorial algorithm execution time by gri6507

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