1 public class Solution 2 { 3     public static void main(String[] args) 4     { 5         int totalCount = 0; 6         int lineCount = 0; 7         int i = 2; 8  9         while(true)10         {11             if(isPrime(i) && isPalindrome(i))12             {13                 System.out.print(i + " ");14                 totalCount++;15                 lineCount++;16             }17 18             i++;19 20             if(lineCount == 10)21             {22                 System.out.println();23                 lineCount = 0;24             }25 26             if(totalCount == 100)27                 break;28         }29     }30 31     public static boolean isPrime(int number)32     {33         if(number == 1)34             return false;35         else if(number == 2)36             return true;37         else38         {39             for(int i = 2; i < number; i++)40             {41                 if(number % i == 0)42                     return false;43             }44             return true;45         }46     }47 48     public static int reverse(int number)49     {50         String strOfNumber = "";51         if(number < 10)52             strOfNumber += number + "";53         else54             strOfNumber += "" + number % 10 + reverse(number / 10);55         return Integer.parseInt(strOfNumber);56     }57 58     public static boolean isPalindrome(int number)59     {60         int backupNumber = reverse(number);61         if(number == backupNumber)62             return true;63         else64             return false;65     }66 }