Method reverse

output/java_guava/1.4.17/Lists.java:853–863

Returns a reversed view of the specified list. For example, Lists.reverse(Arrays.asList(1, 2, 3)) returns a list containing 3, 2, 1. The returned list is backed by this list, so changes in the returned list are reflected in this list, and vice-versa. The returned list supports all of

(List<T> list)

  public static <T> List<T> reverse(List<T> list) {
    if (list instanceof ImmutableList) {
      return ((ImmutableList<T>) list).reverse();
    } else if (list instanceof ReverseList) {
      return ((ReverseList<T>) list).getForwardList();
    } else if (list instanceof RandomAccess) {
      return new RandomAccessReverseList<T>(list);
    } else {
      return new ReverseList<T>(list);
    }
  }

  private static class ReverseList<T> extends AbstractList<T> {
    private final List<T> forwardList;