Re: computing 20! all the way
Re: computing 20! all the way
- Subject: Re: computing 20! all the way
- From: Brian Johnson <email@hidden>
- Date: Fri, 12 Nov 2004 09:17:52 -0800 (PST)
Chrus ;-), I know that, but it is a challenge to explain to a horseloving
12-yr old why computers 'kind of' break when dealing with BIG numbers
exactly (a point I usually make to beginning students), and it reminded
me that I hadn't seen an AS thread on the topic.. I suppose you could say
I just wanted something to munch on (it being a holiday and all). She did
it by hand (good practice). I did it by hand (after a fashion). Win-win!
- brian johnson
On Thu, 11 Nov 2004, Chris Espinosa wrote:
On Nov 11, 2004, at 6:44 PM, Brian Johnson wrote:
Thanks to those who suggested (1)Maple, (2) python (compact!), (3) bc (new
to me), and (4) reduced manual calculation. As a "vanilla applescript"
exercise I took a crack at doing it the "old fashioned way" (aka, the hard
way) by mimicking long-form multiplication on two arbitrary lists of
base-10 digits. I'm happy to say that they all agree (and if anyone wants
an (almost completely genericized) integer product routine for any size
integer, email me. It's not very pretty, but it works).
My suggestion is that you should let your daughter do her own homework.
Going through the process of discovering the above was probably the point of
the exercise; there's no other reason to assign 20! versus, say, 6!.
Chrus
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