>> Adam Spiers <[EMAIL PROTECTED]> writes:
> > Op(i=1..digits, C(i, digits)*digit[i])
> "One step" for very unusual bindings of "one" ;-)
Well, I mean it like:
1234 -> 1 @ 3*2 @ 3*3 @ 4 -> 1
where a @ b means the funky operation we all know already and a * b is
usual multiplication.
About this operation, I found it amusing that it's defined for all |N,
it's closed, associative and commutative. If you take 0 to be the
identity, then there are no inverses for elements other than 0, if you
take 9, 0 doesn't have an identity -- weird thing.
> I'm just gutted that I had considered *1.1 and then rejected it as
> being too much hassle to remove the two outer digits. If only I'd
> realised I could have done that in 3 extra characters!
Well... you at least considered it. When I saw that *1.11%10 I went
"duh!". I think the marks produced by keys on my forehead are still
visible :-)
--
Marcelo
