题解 | #查找输入整数二进制中1的个数#
查找输入整数二进制中1的个数
https://www.nowcoder.com/practice/1b46eb4cf3fa49b9965ac3c2c1caf5ad
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String len = ""; while((len=br.readLine())!=null){ int i = Integer.parseInt(len); int count = 0; while(i!=0){ if((i&1)==1){ count++; } i=i>>1; } System.out.println(count); } } }