21 lines
411 B
Java
21 lines
411 B
Java
package LanQiaoOJ;
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import java.util.Scanner;
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public class 二进制中1的个数2 {
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public static void main(String[] args) {
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Scanner sc=new Scanner(System.in);
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int n=sc.nextInt();
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/*
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* 获得二进制方法还可用
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* 1-BigInteger
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* 2-toString———返回小写——toUpperCase()--返回大写
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* 3-bitCount
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* Integer.person*/
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int count=Integer.bitCount(n);
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System.out.print(count);
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}
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}
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