opennlp.tools.util.TreeHeap Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 opennlp.tools.util;
import java.util.Iterator;
import java.util.SortedSet;
import java.util.TreeSet;
/**
* An implementation of the Heap interface based on {@link java.util.SortedSet}.
* This implementation will not allow multiple objects which are equal to be added to the heap.
* Only use this implementation when object in the heap can be totally ordered (no duplicates).
*
* @deprecated not used anymore, when there is need for a heap use ListHeap instead
*/
@Deprecated
public class TreeHeap implements Heap {
private SortedSet tree;
/**
* Creates a new tree heap.
*/
public TreeHeap() {
tree = new TreeSet();
}
/**
* Creates a new tree heap of the specified size.
* @param size The size of the new tree heap.
*/
public TreeHeap(int size) {
tree = new TreeSet();
}
public E extract() {
E rv = tree.first();
tree.remove(rv);
return rv;
}
public E first() {
return tree.first();
}
public E last() {
return tree.last();
}
public Iterator iterator() {
return tree.iterator();
}
public void add(E o) {
tree.add(o);
}
public int size() {
return tree.size();
}
public void clear() {
tree.clear();
}
public boolean isEmpty(){
return this.tree.isEmpty();
}
public static void main(String[] args) {
Heap heap = new TreeHeap(5);
for (int ai=0;ai