Que18|801. 二进制中1的个数

题目：801. 二进制中1的个数 - AcWing题库

代码实现：

一知半解的规则记住就行了！！

import java.util.*;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        while (n-- > 0) {
            int x = sc.nextInt();
            int count = 0;
            while (x != 0) {
                x -= lowbit(x);
                count++;
            }
            System.out.print(count + " ");
        }
    }
    public static int lowbit(int x) {
        return x & -x;
    }
}