Leetcode 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).

class Solution {
public:
    uint32_t  reverseBits(uint32_t n) {
        uint32_t result= 0;
        for(int i=0; i<32; i++)
            result = (result<<1) + (n>>i & 1);

        return result;
    }
};