avltreetester.java

来自「数据结构与算法分析中AVL Tree的JAVA详尽代码 请有需要的同学下载」· Java 代码 · 共 56 行

import java.util.*;

public class AVLTreeTester implements Process {

    protected final String PROMPT =
        "In the Input line, please enter the number of elements. ";


    protected GUI gui;

    protected AVLTree myTree;

    protected Random random;


    public AVLTreeTester() {

        myTree = new AVLTree();
        random = new Random (100);
        gui = new GUI (this);
        gui.println (PROMPT);

    } // constructor


    // Postcondition: One line of input has been processed.
    public void processInput (String s) {

        final String SIZE_MESSAGE = "The tree size is ";

        final String CLOSE_WINDOW_MESSAGE =
            "Please close this window when you are ready.";

        Iterator itr;

        int num;

        int n = Integer.parseInt (s);

        while (myTree.size() < n)
           myTree.add (new Integer (random.nextInt()));

        if (myTree.isAVL())
            gui.println ("This AVLTree's height is " + myTree.height());
        else
            gui.println ("failure");
        gui.println (CLOSE_WINDOW_MESSAGE);
        gui.freeze();

    } // method processInput


} // class AVLTreeTester