two int integers m and n binary representations of how many digits are different

Title Description

There are 10 kinds of people in the world, one understands the binary system, one does not understand. So you know the binary representation of two int32 integers m and n, how many bits are different?
Input Example:
1999 2299
Output Example:
7

Problem analysis

In binary, the corresponding bit (bit) of the statistic two digits can be different or operation, the difference or operation result is the same as 0 differs 1. So two different or 1 of the results are the same number of digits.

    publicstaticintcount(intint b)      {          int m = a ^ b;          int0;          while(m>0)          {              m &= (m-1);              num++;          }          return num;      }  

May 7, 2015 21:57:17

two int integers m and n binary representations of how many digits are different