Reverse bits of a given 32 bits unsigned integer.
For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as 00111001011110000010100101000000).
public class Solution {
// you need treat n as an unsigned value
public int reverseBits(int n) {
int result = 0;
int mask =1;
for(int i = 0 ;i<32;i++)
{
result|=((n&mask)<<(31-i));
n>>=1;
if(n==0)
break;
}
return result;
}
}
