go ahead... be a heretic  
PerlMonks 
Re: Re (tilly) 1: Finding sum of all digits from 1 to 1 million.by PrakashK (Pilgrim) 
on Jan 24, 2002 at 00:59 UTC ( #141024=note: print w/ replies, xml )  Need Help?? 
a good exercise would be to write Perl code that efficiently calculates the sum of all of the digits in a range of integers.Assuming sum(n) is the sum of all digits from 1 to n, sum_range(m, n) is the sum of all digits from m to n, and m < n, isn't the following true? Or, did I totally get you wrong? /prakash
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