使用链表(LinkedList) mix-in 到其中的栈(Stack)

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//****************************************************************************

// FileName: Stack.as

// Description:Stack

// Author: AOL

// Last Modified:14/10/2003

//****************************************************************************

import net.flash8.ds.LinkedList;

class net.flash8.ds.Stack

{

private var stackList:LinkedList;

// constructor

public function Stack()

{

stackList = new LinkedList("stack");

}

// add object to stack

public function push(object:Object):Void

{

stackList.insertAtFront(object);

}

// remove object from stack

public function pop():Object

{

return stackList.removeFromFront();

}

// determine if stack is empty

public function isEmpty():Boolean

{

return stackList.isEmpty();

}

// output stack contents

public function print():Void

{

stackList.print();

}

// end class Stack

//SatckTest.fla

import net.flash8.ds.Stack;

import net.flash8.ds.EmptyListError;

var stack = new Stack();

// create objects to store in the stack

var bool:Boolean = true;

var integer:Number = 12324;

var string:String = "hello";

var movieClip:MovieClip = new MovieCip("movie clip");

// use push method

stack.push(bool);

stack.print();

stack.push(integer);

stack.print();

stack.push(string);

stack.print();

stack.push(movieClip);

stack.print();

// remove items from stack

try

{

var removedObject:Object = null;

for(var i:Number=1;i<6;i++)

{

removedObject = stack.pop();

trace(removedObject.toString()+" popped");

stack.print();

}

// catch exception if stack empty when item popped

catch (emptyListError)

{

emptyListError.messageTrace();

}

output出的结果：

/=======begin of the stack table ===========true