package com.company;
import java.util.Scanner;
public class Demo3 {
public static void main(String[] args) {
System. out . println("请输入你要判断数字");int shu=new Scanner(System. in) .nextInt();
boolean flag = false;
for(int i=2;i<shu;i++)
{
if(shu%i==0)
{
flag = true;
}
}
String str = flag ? "不是质数" : "是质数";
System.out.println("这个数是" + str);
}
}
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