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  1.  
  2. public class Main {
  3.  
  4. 	public static void main(String[] args) {
  5. 		int[] array = new int[20];
  6. 		for(int i=0; i<20; i++) {
  7. 			array[i] = new java.util.Random().nextInt(3);
  8. 		}
  9. //		for(int i=0; i<20; i++) {
  10. //			System.out.println(array[i]);
  11. //		}
  12.  
  13. 		int counter_0 = 0;
  14. 		int counter_1 = 0;
  15. 		int counter_2 = 0;
  16. 		for(int i=0; i<20; i++) {
  17. 			if(array[i]==0) {
  18. 				counter_0 += 1;
  19. 			} else if(array[i]==1) {
  20. 				counter_1 += 1;
  21. 			} else {	//	array[i]==2 の時
  22. 				counter_2 += 1;
  23. 			}
  24. 		}
  25. 		System.out.println("0の個数は"+counter_0+"、 1の個数は"+counter_1+"、 2の個数は"+counter_2);
  26.  
  27. 	}
  28.  
  29. }
  30.  
Success #stdin #stdout 0.04s 4386816KB
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0の個数は5、 1の個数は11、 2の個数は4
https://ideone.com/3OG5za
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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