I think challenge here is not the Execution time, but the storage. 300 ! or
400! should generally go beyond the storage capabilities of long long ints
in cpp.
@ Rohit Saraf: Hence, I don't know if even tail recursion will ultimately be
able to store the output.
I think Rajesh Patidar's answer fits the bill well, in terms of storage.
On Sun, May 2, 2010 at 2:23 PM, vignesh radhakrishnan
rvignesh1...@gmail.com wrote:
I agree with abhijith. But given some very large x for which i would have
to find factorial.
I would either
(i) use gmp in cpp or BigInteger or java if its not a lab exercise or an
interview
(ii) use simple brute multiplication algorithm.
The second approach requires
(a) The no. of digits in n! for making storage available
(b) The calculation itself which I would brute force
References:
http://inder-gnu.blogspot.com/2009/08/find-number-of-digits-in-factorial-of.html
http://stackoverflow.com/questions/1113167/can-one-know-how-large-a-factorial-would-be-before-calculating-it
http://delphiforfun.org/programs/big_factorials.htm
On 2 May 2010 13:59, Rohit Saraf rohit.kumar.sa...@gmail.com wrote:
google it... u will gt it
i am on mobile... cannot explain now..
On 5/2/10, divya jain sweetdivya@gmail.com wrote:
wat is tail recursion plz explan in detail
On 2 May 2010 08:15, Rohit Saraf rohit.kumar.sa...@gmail.com wrote:
@divya use tail recursion and rest should be fine..
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