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/*
 * Copyright 2008 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package java.util;

/**
 * A set known to be in ascending order. [Sun
 * docs]
 * 
 * @param  element type.
 */
public interface SortedSet extends Set {

  Comparator comparator();

  E first();

  SortedSet headSet(E toElement);

  E last();

  SortedSet subSet(E fromElement, E toElement);

  SortedSet tailSet(E fromElement);

  @Override
  default Spliterator spliterator() {
    return new Spliterators.IteratorSpliterator(this,
        Spliterator.DISTINCT | Spliterator.ORDERED | Spliterator.SORTED) {

      @Override
      public Comparator getComparator() {
        return SortedSet.this.comparator();
      }
    };
  }
}




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