SortedIteratorTest.java

SortedIteratorTest.java

import org.junit.Test;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.stream.IntStream;

public class SortedIteratorTest {

  @Test
  public void test1() {

    Iterator<Integer> i1 = IntStream.rangeClosed(1, 3).iterator();
    Iterator<Integer> i2 = IntStream.rangeClosed(2, 5).iterator();
    Iterator<Integer> i3 = IntStream.rangeClosed(4, 8).iterator();

    ArrayList<Iterator<Integer>> list = new ArrayList<>();
    list.add(i1);
    list.add(i2);
    list.add(i3);

    Iterator<Integer> target = new SortedIterator<>(list);
    while (target.hasNext()) {
      System.out.println(target.next());
    }
  }
}