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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.  private static List<Integer> rzuty = new ArrayList<>();
  11. 	private static List<String> dublety = new ArrayList<>();;
  12.  
  13.  
  14. 	public static void main(String[] args) {
  15. 				Rzucaj();
  16. 				String s = PrezentacjaDubletow();
  17. 				System.out.println(rzuty);
  18. 				System.out.println(s);
  19. 	}	
  20. 	public static void Rzucaj() {
  21.  
  22.         int ileKostek = 6;
  23.         int ileScian = 6;
  24.  
  25.         for (int i = 0; i < ileKostek; i++) {
  26.             Random rand = new Random();
  27. 			int rzut  = rand .nextInt(ileScian) + 1;
  28.             rzuty.add(rzut);
  29.         }
  30.  
  31.     }
  32.  
  33.  
  34. 	public static String PrezentacjaDubletow() {
  35.  
  36.  
  37.         Set<Integer> noDupes = new HashSet<Integer>();
  38.         noDupes.addAll(rzuty); // Remove duplicates
  39.  
  40.         for (Integer i : noDupes) {
  41.             int wystapienia = Collections.frequency(rzuty, i);
  42.             if (wystapienia > 1) {
  43.                 dublety.add(i + " - " + wystapienia + ";" );
  44.             }
  45.         }
  46.  
  47.         String wynik = "";
  48. 		for (int i =0 ; i <  dublety.size(); i++) {
  49.             wynik  = wynik + dublety.get(i);
  50.         }
  51.  
  52.  
  53.         return wynik;
  54.     }
  55.  
  56.  
  57. }
  58.  
  59.  
  60.  
Success #stdin #stdout 0.08s 380160KB
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Standard input is empty
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[4, 2, 5, 1, 5, 6]
5 - 2;
https://ideone.com/5n7WqY
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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