191. Number of 1 Bits

 

 

#include<iostream>
#include<string>
using namespace std;
int hammingWeight(uint32_t n) {
    int ans = 0;
    while (n) {
        if (n % 2 == 1) {
            ans += 1;
        }
        n = n / 2;
    }
    return ans;
}

int main() {
    uint32_t a = 128;
    cout << hammingWeight(a) << endl;
    return 0;
}