way to calculate 2**1000 without expanding it?

Prasad, Ramit ramit.prasad at jpmorgan.com
Fri Sep 16 22:16:03 CEST 2011


>> Hi guys,
>>         i am writing a program to sum up the digits of a number 2**1000?
>> Is there a way/formula to do it without expanding it?

>Since this sounds like homework, I won't post the one-liner I used to
>do it the brute-force way, but I will note that it takes about 200
>microseconds to run on my laptop.

If you happen to be new to Python, I will say I used these functions to create a one liner (in alphabetical order).

Int
Lambda
Map
Reduce
Str


Ramit


Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423


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