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  1. class Try{
  2.  
  3. 	public static void main(String args[]){
  4. 		int[] collection = new int[6];
  5.  
  6. 		collection[0] = 8;
  7. 		collection[1] = 2;
  8. 		collection[2] = 4;
  9. 		collection[3] = 2;
  10. 		collection[4] = 21;
  11. 		collection[5] = 3;
  12.  
  13. 		Random rnd = new Random();
  14. 		int[] result = new int[4];
  15.  
  16. 		boolean exist;
  17. 		for(int j = 0; j<4; j++){
  18. 			exist = false;
  19.  
  20. 			int r, temp;
  21. 			r = rnd.get( 5 );
  22. 			System.out.println("r = "+r); 
  23.  
  24. 			//losowanie indeksu do tablicy collection[]
  25. 			temp = collection[r];
  26.  
  27.  
  28.  
  29. 			for(int i = 0; i<6; i++)
  30. 			{
  31. 				//sprawdzanie czy tej wartosci juz nie ma w tablicy result
  32. 				if(temp == result[i]){
  33. 					exist = true;
  34. 					break;
  35. 				}
  36. 			}
  37. 			if(exist == false){
  38. 				result[j] = temp;
  39. 			}
  40. 			else
  41. 			{
  42. 				j--;	
  43. 			}
  44.  
  45. 		}
  46. 	}
  47.  }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:13: error: cannot find symbol
		Random rnd = new Random();
		^
  symbol:   class Random
  location: class Try
Main.java:13: error: cannot find symbol
		Random rnd = new Random();
		                 ^
  symbol:   class Random
  location: class Try
2 errors
stdout
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Standard output is empty
https://ideone.com/L5cG9n
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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