demosimplelistuos.java

国外的数据结构与算法分析用书

/* DemoSimpleListUos
 * ---------------------------------------------
 * Copyright (c) 2002 University of Saskatchewan
 * All Rights Reserved
 * -------------------------------------------- */
 
 package dslib.demo;
 
 import dslib.list.*;
 import java.io.*;
 
/** A class that demonstrates the use of any SimpleListUos. */
 public class DemoSimpleListUos
 {
 		
	/**  Performs the demo on the SimpleList passed to it.  
		Note that this destroys the list.
		@param l The list to be demo-ed.*/
	public  DemoSimpleListUos(SimpleListUos l)
	{
		// place the output in a text file whose name reflects the class being demonstrated
		String className = l.getClass().getName();
		className = className.substring(className.lastIndexOf(".")+1);
		PrintWriter out = null;
		try
		{
			out = new PrintWriter(new FileOutputStream("OutputDemo" + className + ".txt", true));
		} catch (Exception e)
		{
			System.err.println("Error creating output file in test routine for " + className);
			e.printStackTrace();
		}
		out.println("Testing the Simple List Properties");
		out.println("Inserting.... 1");
		l.insertFirst(new Integer(1));
		out.println("Inserting.... 3");
		l.insertFirst(new Integer(3));
		out.println("Inserting.... 23");
		l.insertFirst(new Integer(23));
		out.println("Inserting.... 63");
		l.insertFirst(new Integer(63));
		out.println("Inserting.... -35");
		l.insertFirst(new Integer(-35));
		out.println("Inserting.... 90");
		l.insertFirst(new Integer(90));
		out.println("Inserting.... 23");
		l.insertFirst(new Integer(23));
		out.println("Inserting.... 89");
		l.insertFirst(new Integer(89));
		out.println("Inserting.... -23");
		l.insertFirst(new Integer(-23));
		out.println("Inserting.... 5");
		l.insertFirst(new Integer(5));
		out.println("Current Contents: " + l);
		out.println("Is Empty? " + l.isEmpty());
		out.println("Is Full? " + l.isFull());
		out.println("First Item is: " + l.firstItem());
		out.println("Deleting First Item");
		l.deleteFirst();
		out.println("Deleting First Item");
		l.deleteFirst();
		out.println("Current Contents: " + l);
		out.println("Is Full? " + l.isFull());
		out.println("WipeOut");
		l.wipeOut();
		out.println("Current Contents: " + l);
		out.println("Is Empty? " + l.isEmpty());
		out.println("Is Full? " + l.isFull());
		out.println("Inserting.... 23");
		l.insertFirst(new Integer(23));
		out.println("Current Contents: " + l);
		out.println("Is Empty? " + l.isEmpty());
		out.println("Is Full? " + l.isFull());
		out.println("Deleting First Item");
		l.deleteFirst();
		out.println("Current Contents: " + l);
		out.println("Is Empty? " + l.isEmpty());
		out.close();				
	}
}