} else {
      Range<K> range = ranges.get(index);
      return range.contains(key) ? Maps.immutableEntry(range, values.get(index)) : null;
    }
  }

  @Override
  public Range<K> span() {
    if (ranges.isEmpty()) {
      throw new NoSuchElementException();
    }
    Range<K> firstRange = ranges.get(0);
    Range<K> lastRange = ranges.get(ranges.size() - 1);

    for (Range<Integer> range : RANGES) {
      Map<Integer, Integer> model = Maps.newHashMap();
      putModel(model, range, 1);
      RangeMap<Integer, Integer> test = TreeRangeMap.create();
      test.put(range, 1);
      verify(model, test);
    }
  }

  public void testAllRangePairs() {
    for (Range<Integer> range1 : RANGES) {
      for (Range<Integer> range2 : RANGES) {

    return getSubMap(0, keySet.headIndex(checkNotNull(toKey), inclusive));
  }

  /**
   * This method returns a {@code ImmutableSortedMap}, consisting of the entries whose keys ranges
   * from {@code fromKey}, inclusive, to {@code toKey}, exclusive.
   *
   * <p>The {@link SortedMap#subMap} documentation states that a submap of a submap throws an {@link

  ImmutableRangeSet(ImmutableList<Range<C>> ranges) {
    this.ranges = ranges;
  }

  private ImmutableRangeSet(ImmutableList<Range<C>> ranges, ImmutableRangeSet<C> complement) {
    this.ranges = ranges;
    this.complement = complement;
  }

  private final transient ImmutableList<Range<C>> ranges;

  @Override
  public boolean intersects(Range<C> otherRange) {
    int ceilingIndex =
        SortedLists.binarySearch(

  ImmutableRangeSet(ImmutableList<Range<C>> ranges) {
    this.ranges = ranges;
  }

  private ImmutableRangeSet(ImmutableList<Range<C>> ranges, ImmutableRangeSet<C> complement) {
    this.ranges = ranges;
    this.complement = complement;
  }

  private final transient ImmutableList<Range<C>> ranges;

  @Override
  public boolean intersects(Range<C> otherRange) {
    int ceilingIndex =
        SortedLists.binarySearch(

/**
 * A set comprising zero or more {@linkplain Range#isEmpty nonempty}, {@linkplain
 * Range#isConnected(Range) disconnected} ranges of type {@code C}.
 *
 * <p>Implementations that choose to support the {@link #add(Range)} operation are required to
 * ignore empty ranges and coalesce connected ranges. For example:
 *
 * <pre>{@code
 * RangeSet<Integer> rangeSet = TreeRangeSet.create();
 * rangeSet.add(Range.closed(1, 10)); // {[1, 10]}

    } else {
      Range<K> range = ranges.get(index);
      return range.contains(key) ? Maps.immutableEntry(range, values.get(index)) : null;
    }
  }

  @Override
  public Range<K> span() {
    if (ranges.isEmpty()) {
      throw new NoSuchElementException();
    }
    Range<K> firstRange = ranges.get(0);
    Range<K> lastRange = ranges.get(ranges.size() - 1);

    // test that connected ranges are coalesced
    for (int i = 0; i + 1 < asRanges.size(); i++) {
      Range<C> range1 = asRanges.get(i);
      Range<C> range2 = asRanges.get(i + 1);
      assertFalse(range1.isConnected(range2));
    }

    // test that there are no empty ranges
    for (Range<C> range : asRanges) {
      assertFalse(range.isEmpty());
    }

      }
    }
    ImmutableList<Range<Integer>> ranges = rangesBuilder.build();
    for (int i = -2; i <= 2; i++) {
      rangesBuilder.add(Range.closedOpen(i, i));
      rangesBuilder.add(Range.openClosed(i, i));
    }
    ImmutableList<Range<Integer>> subRanges = rangesBuilder.build();
    for (Range<Integer> range1 : ranges) {
      for (Range<Integer> range2 : ranges) {

  @GwtIncompatible // java.math.BigInteger
  public void testMean() {
    // Odd-sized ranges have an obvious mean
    assertMean(2, 1, 3);

    assertMean(-2, -3, -1);
    assertMean(0, -1, 1);
    assertMean(1, -1, 3);
    assertMean((1 << 30) - 1, -1, Integer.MAX_VALUE);

    // Even-sized ranges should prefer the lower mean
    assertMean(2, 1, 4);
    assertMean(-3, -4, -1);
    assertMean(0, -1, 2);