Leetcode-190 Reverse Bits

#190.　Reverse Bits          

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).

题解：移位运算。

class Solution {
public:
    uint32_t reverseBits(uint32_t n) {
        int t=32;
        uint32_t num;
        while(t--)
        {
            if(n&1==1)
            {
                n=n>>1;
                num+=1<<t;
            }
            else
            {
                n=n>>1;
                num+=0<<t;
            }
        }
        return num;
    }
};