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package utility.structure;
import java.io.Serializable;
import java.security.InvalidParameterException;
import java.util.Comparator;
import java.util.ConcurrentModificationException;
/**
*
* @author odie.tang
* @version 1.0 11/09/09
*/
public class BinarySearchTree<E> implements Comparable<E>,Serializable{

private static final long serialVersionUID = -8154673525487170187L;
/**
* The comparator, or null if priority queue uses elements'
* natural ordering.
*/
private Comparator<? super E> comparator = null;
private E data;
private BinarySearchTree<E> parent = null;
private BinarySearchTree<E> leftChild = null;
private BinarySearchTree<E> rightChild = null;
/**
* level indicates node's level in the whole tree, eg: root's level is 1, and its children's level is 2...
*/
private int level;

/**
* to identify the whether the child is a left child or a right one
*/
enum Child{left,right};

public BinarySearchTree() {
this.level = 0;
}

public BinarySearchTree(Comparator<? super E> comparator){

this.comparator = comparator;

this.level = 0;
}

public BinarySearchTree(E root) {

this(root,null);
}

public BinarySearchTree(E root,Comparator<? super E> comparator){

this.data = root;

this.comparator = comparator;

this.level = 1;
}

private BinarySearchTree(BinarySearchTree<E> parent,Child childType,E child){

this.data = child;

this.parent = parent;

this.level = parent.level + 1;

if (childType == Child.left)
parent.leftChild = this;
else
parent.rightChild = this;

this.comparator = parent.comparator;
}
public void add(E e){

if (this.level == 0){

this.level = 1;

this.data = e;
}
else{
BinarySearchTree<


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 /**
* @(#)MyTray.java
*
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* @version 1.00 2009/11/9
*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MyTray implements ActionListener {
private MenuItem item1;
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import java.util.Random;
public class MathOperators {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
//Ëæ»úÊýµÄ²úÉú
int[] arr = new int[10];
Random r = new Random();
for (int m = 0; m < arr.length; m++)
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