코테준비 - Number of 1 Bits

Number of 1 Bits

class Solution {
public:
    int hammingWeight(uint32_t n) {
        int cnt = 0;
        for (int i = 0; i < 32; i++) {
            if (n & 1) {
                cnt++;
            }
            n >>= 1;
        }
        return cnt;
    }
};