北航机试题素数

版权声明：感谢阅读，欢迎批评指正。 https://blog.csdn.net/skyejy/article/details/88745284

今日份AC

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		for(int i=2;i<n;i++)
		{
			if(issushu(i)==true)
			{
				if(i%10==1)
					System.out.print(i+" ");
			}
		}
	}

	private static boolean issushu(int i) {
		// TODO Auto-generated method stub
		for(int j=2;j<=Math.sqrt(i);j++)
		{
			if(i%j==0)
				return false;
		}
		return true;
	}

}