🚀 go-pugleaf

In article <4g00u6$gkk@sun001.spd.dsccc.com>,
Mike McCarty <jmccarty@spd.dsccc.com> wrote:
>)Don't just strip the trailing zeros, remove all digits except the last non-ze
>)digit (which is your output) and then multiply by the next number in your seq
>)This keeps the numbers down to a managable level and gives the correct answer
>)no more significant digit can affect the value of the LSD.
>
>Let's try your technique:
>
>	1! = 1 ~ 1
>	2! = 2x1! ~ 2
>	3! = 3x2! ~ 3x2 = 6
>	4! = 4x3! ~ 4x6 = 24 ~ 4
>	5! = 5x4! ~ 5x4 = 20 ~ 0
>
>You should at least think before engaging the fingers.

Perhaps you should try *reading* before engaging the fingers. You'll notice
he said "remove all digits except the last NON-ZERO digit". So one gets:

	1! = 1 ~ 1
	2! = 2x1! ~ 2
	3! = 3x2! ~ 3x2 = 6
	4! = 4x3! ~ 4x6 = 24 ~ 4
	5! = 5x4! ~ 5x4 = 20 ~ 2
	6! = 6x5! ~ 6x2 = 12 ~ 2

This technique does give the correct result.

-- 
        Carl Laurence Gonsalves - clgonsal@undergrad.math.uwaterloo.ca
                   Computer Science, University of Waterloo
               http://www.undergrad.math.uwaterloo.ca/~clgonsal/
                   http://www.csclub.uwaterloo.ca/~clgonsal/