Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister
 
PerlMonks  

Re: Finding sum of all digits from 1 to 1 million.

by flexvault (Monsignor)
on Jan 30, 2013 at 19:32 UTC ( #1016144=note: print w/replies, xml ) Need Help??


in reply to Finding sum of all digits from 1 to 1 million.

vladb,

I confused by the term 'DECIMAL DIGITS'. In the following sequence, I would count the number of decimal digits as:

100 sum: 3 101 sum: 6 102 sum: 9 ...
In those 3 numbers, we have a total of 9 digits.

So if I use this code:

perl -E '$sum=0;for(1..1e6){$sum+=length($_);} say $sum;'
The result printed as 5888896, which is not 27000001.

So how is the term 'DECIMAL DIGITS' defined? I think that is key to solving for the "real" answer.

Regards...Ed

"Well done is better than well said." - Benjamin Franklin

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1016144]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (5)
As of 2016-10-01 23:19 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?






    Results (9 votes). Check out past polls.