> Is the parameter to sum even required in this case?  The docs say the
> parameter n merely limits the sum modulo 2**n-1 which defaults to 16,
> or modulo 65535.  And the number of digits could be more than five I'd
> think, as the limiting factor is that modulo operation and so long as
> the actual sum of each character does NOT cross that threshold (65535
> in the default parameter case), it should be fine, no?  (And using
> ASCII values 48-57 inclusive, we should be safe at least up to strings
> of 1149 digits in length.)

First of all, to be more exact, I have to say in my previous post "if 
the number of digits is less than or equal to five."

I am assuming that we want the shortest code (for the Ruby Golf ;-) ). 
Yes, you are right that with slightly longer code, we can deal with 
larger number.

Regards,

Bill

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