问在Java 8中，用索引更新列表中的项的更有效的方法是什么？

EN

  static class Item {
    String name;
    int index;

    Item(String name) {
      this.name = name;
    }
  }

  @Test
  public void test() {
    List<Item> items =
        Arrays.stream(new String[] {"z", "y", "x"})
          .map(Item::new)
          .collect(Collectors.toList());
    items.sort(Comparator.comparing(o -> o.name));

    // begin functionalize me    
    int i = 0;
    for (Item it : items) {
      it.index = i++;
    }
    // end functionalize me

    assertEquals(0, items.get(0).index);
    assertEquals(1, items.get(1).index);
    assertEquals(2, items.get(2).index);
  }