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  1.  
  2. import java.util.Iterator;
  3.  
  4. class Zakres implements Iterable<Integer> {
  5.  
  6.     final int start;
  7.     final int koniec;
  8.  
  9.     public Zakres(final int start, final int koniec) {
  10.         this.start = start;
  11.         this.koniec = koniec;
  12.     }
  13.  
  14.     @Override
  15.     public Iterator<Integer> iterator() {
  16.         return new Iterator<Integer>() {
  17.  
  18.             int aktualny = start;
  19.  
  20.             @Override
  21.             public boolean hasNext() {
  22.                 return aktualny <= koniec;
  23.             }
  24.  
  25.             @Override
  26.             public Integer next() {
  27.                 return aktualny++;
  28.             }
  29.  
  30.             @Override
  31.             public void remove() {
  32.                 throw new UnsupportedOperationException("Illegal action.");
  33.             }
  34.         };
  35.     }
  36.  
  37. }
  38.  
  39. public class Main {
  40.  
  41.     public static void main(String[] args) {
  42.         Zakres zakres = new Zakres(5, 8);
  43.         for (int i : zakres) {
  44.             System.out.println(i);
  45.         }
  46.         for (int i : zakres) {
  47.             System.out.println(i);
  48.         }
  49.         for (int i : zakres) {
  50.             System.out.println(i);
  51.         }
  52.     }
  53. }
  54.  
Success #stdin #stdout 0.08s 380160KB
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https://ideone.com/avtl9i
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
secret

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