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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static boolean isPrime(int n){
  11.         if(n <= 1){
  12.             return false;
  13.         }
  14.         if(n <= 3){
  15.             return true;
  16.         }
  17.         if(n % 2 == 0 || n % 3 == 0){
  18.             return false;
  19.         }
  20.         for(int i = 5; i * i <= n; i += 6){
  21.             if(n % i == 0 || n % (i + 2) == 0){
  22.                 return false;
  23.             }
  24.         }
  25.         return true;
  26.     }
  27.  
  28.     public static String solution(int i) {
  29.         String PID = "";
  30.         String ID = "";
  31.         int num = 1;
  32.         int count = 0;
  33.         int j;
  34.         while(count < i + 1){
  35.                 num += 1;
  36.                 for(j = 2; j <= num; j++){
  37.                     if(num % j == 0){
  38.                         break;
  39.                     }
  40.                 }
  41.                 if(j == num){
  42.                     count++;
  43.                 }
  44.         }
  45.         PID += Integer.toString(num);
  46.         while(PID.length() < 5){
  47.             if(num == 2){
  48.                 num++;
  49.             } else{
  50.                 num += 2;
  51.             }
  52.             if(isPrime(num)){
  53.                 PID += Integer.toString(num);
  54.             }
  55.         }
  56.         for(int f = 0; f < 5; f++){
  57.             ID += Character.toString(PID.charAt(f));
  58.         }
  59.         return ID;
  60.     }
  61. 	public static void main (String[] args) throws java.lang.Exception
  62. 	{
  63. 		System.out.println(solution(9999));
  64. 	}
  65. }
Success #stdin #stdout 2.26s 36208KB
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https://ideone.com/xGA62j
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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