View Code of Problem 92

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int a = scanner.nextInt();
		int b = scanner.nextInt();
		int[] r = new int[b-a];
		int k=0;
		for(int i =a; i<b; i++) {
			if(pd(i)) {
				r[k++] = i;
			}
		}
		for(int i=0;i<k;i++) {
			if( (i+1) % 5 ==0 ) {
				System.out.printf("%6d",r[i]);
				System.out.println();
			}else {
				System.out.printf("%6d",r[i]);
			}
		}
		
	}
	
	public static Boolean pd(int number) {
		String s = String.valueOf(number);
		int i =0, j=s.length()-1;
		while(i<j) {
			if(s.charAt(i) != s.charAt(j)) {
				return false;
			}
			i++;
			j--;
		}
		for(int k=2; k<=Math.sqrt(number);k++) {
			if(number % k==0) {
				return false;
			}
		}
		return true;
	}
}