题解 | 查找输入整数二进制中1的个数

#include <iostream>
using namespace std;

static int countOne(unsigned int n) {
    int sum = 0;

    while (n) {
        if (n & 0x01)
            sum++;
        n = n >> 1;
    }


    return sum;
}

int main() {
    unsigned int m, n;
    while (cin >> m >> n) {
        cout << countOne(m) << endl << countOne(n) << endl;
    }

    return 0;
}