Wednesday, September 23, 2009

power of 2

how will you find whether a number is a power of 2 or not in single step.


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if(n>0 && (n & (n-1))) {cout<<"power of 2";}



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2 comments:

  1. UnknownSeptember 23, 2009 at 11:15 PM

    if n & n-1 = 0 then its power of 2.

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  2. sakshi2212September 24, 2009 at 2:09 PM

    I was asked this questions in of the interviews long time back :)

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