发表更新program2 分钟读完 (大约349个字)

数据结构cpp二叉树

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using namespace std;


typedef struct btreenode
{
	char data;
	struct btreenode *lchild;
	struct btreenode *rchild;
}BTreeNode, *BTree;

typedef struct
{
	BTree link;
	int flag;
}Stack;


void InitBTree(BTree &BT)
{
	BT = NULL;
}


void CreatBTree(BTree &BT)
{
	char ch;
	ch = getchar();
	if (ch == ' ')
		BT = NULL;
	else
	{
		BT = new BTreeNode;
		BT->data = ch;
		CreatBTree(BT->lchild);
		CreatBTree(BT->rchild);
	}
}
void PreOrder(BTree BT)
{
	if (BT == NULL)
	{
		cout << "NULL";
		return;
	}
	else
	{
		cout << BT->data;
		if (BT->lchild != NULL)
			PreOrder(BT->lchild);
		if (BT->rchild != NULL)
			PreOrder(BT->rchild);
	}
}


void InOrder(BTree BT)
{
	if (BT == NULL)
	{
		cout << "NULL";
		return;
	}



	if (BT->lchild != NULL)
		InOrder(BT->lchild);


	cout << BT->data;


	if (BT->rchild != NULL)
		InOrder(BT->rchild);

}


void PostOrder(BTree BT)
{
	if (BT == NULL)
	{
		cout << "NULL";
		return;
	}


	if (BT->lchild != NULL)
		PostOrder(BT->lchild);


	if (BT->rchild != NULL)
		PostOrder(BT->rchild);


	cout << BT->data;

}


void LevelOrder(BTree BT)
{
	BTree Queue[30];
	int front, rear;
	if (BT == NULL) return;

	front = -1;
	rear = 0;
	Queue[rear] = BT;


	while (front != rear)
	{
		front++;
		cout << Queue[front]->data;
		if (Queue[front]->lchild != NULL)
		{
			rear++;
			Queue[rear] = Queue[front]->lchild;
		}


		if (Queue[front]->rchild != NULL)
		{
			rear++;
			Queue[rear] = Queue[front]->rchild;
		}
	}
}


void PreOrder_2(BTree BT)
{
	BTree stack[30], p;
	int top;
	if (BT == NULL) return;
	top = -1;
	p = BT;
	while (!(p == NULL && top == -1))
	{
		while (p != NULL)
		{
			cout << p->data;
			if (top < 30)
			{
				stack[top + 1] = p;
				top++;
			}
			else
			{
				cout << "Stack is full!" << endl;
				return;
			}
			p = p->lchild;
		}

		if (top < 0) return;
		else
		{
			top--;
			p = stack[top + 1];
			p = p->rchild;
		}
	}
}


void PostOrder_2(BTree BT)
{
	Stack s[30];
	BTree p;
	int top, sign;
	if (BT == NULL) return;
	top = -1;
	p = BT;
	while (!(p == NULL && top == -1))
	{
		if (p != NULL)
		{
			s[++top].link = p;
			s[top].flag = 1;
			p = p->lchild;
		}
		else
		{
			p = s[top].link;
			sign = s[top].flag;
			top--;
			if (sign == 1)
			{
				s[++top].link = p;
				s[top].flag = 2;
				p = p->rchild;
			}
			else
			{
				cout << p->data;
				p = NULL;
			}
		}
	}
}


void main()
{
	BTree T;
	InitBTree(T);
	cout << "InitTree completed!" << endl;
	cout << "Create Tree:" << endl;
	CreatBTree(T);
	cout << "/nPreOrder:" << endl;
	PreOrder(T);
	cout << "/nInOrder:" << endl;
	InOrder(T);
	cout << "/nPosetOrder:" << endl;
	PostOrder(T);
	cout << "/nLevelOrder:" << endl;
	LevelOrder(T);
	cout << "/nPreOrder_2:" << endl;
	PreOrder_2(T);
	cout << "/nPostOrder_2:" << endl;
	PostOrder_2(T);
	system("pause");
}
发表更新program2 分钟读完 (大约270个字)

java Applet实现播放音乐

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import java.applet.*;
import java.awt.event.*;
import java.awt.*;

@SuppressWarnings("serial")
public class music extends Applet
implements ActionListener
{
    AudioClip audio;
    Button btExit,btOpen,btPlay,btLoop,btStop;
    /**   
	*  
	方法说明：初始化Applet   
	*  
	输入参数：   
	*  
	返回类型：   
	*/
	public void init()
	{
		//加载声音文件   
		audio = getAudioClip(getDocumentBase(), "music.au");//这里放上你加在新建文件夹里面的歌曲名称,au格式   
															//构造按钮   
		setLayout(new FlowLayout());
		btPlay = new Button("Play");
		btPlay.addActionListener(this);
		btLoop = new Button("Loop");
		btLoop.addActionListener(this);
		btStop = new Button("Stop");
		btStop.addActionListener(this); //给Play按钮添加一个监听事件   
										//将按钮添加到Applet中   
		add(btPlay);
		add(btLoop);
		add(btStop);
	}

	public void actionPerformed(ActionEvent e)
	{

		//如果点击的是Play按钮   
		if (e.getSource() == btPlay)
		{
			play();
		}
		//如果点击的是loop按钮   
		if (e.getSource() == btLoop)
		{
			loop();
		}
		//如果点击的是stop按钮   
		if (e.getSource() == btStop)
		{
			stop();
		}
	}
	/**   
	*  
	方法说明：播放声音   
	*  
	输入参数：   
	*  
	返回类型：   
	*/
	public void play()
	{
		if (audio != null) stop();
		audio.play();
	}
	/**   
	*  
	方法说明：循环播放声音   
	*  
	输入参数：   
	*  
	返回类型：   
	*/
	public void loop()
	{
		if (audio != null)
			audio.loop();
	}
	/**   
	*  
	方法说明：停止播放声音   
	*  
	输入参数：   
	*  
	返回类型：   
	*/
	public void stop()
	{
		if (audio != null)
			audio.stop();
	}   
}
发表更新program3 分钟读完 (大约416个字)

java模拟四则运算软件

写这个程序也为了纪念王江民先生，话说当年他也是写过这个类似程序。

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import java.applet.*;   
import java.awt.*;   
import java.awt.event.*; 

public class game extends Applet implements ActionListener{   
//定义变量   
int num1, num2, num3, jieguo, jilu, error = 0, right = 0, key = 0;   
char op;   
float percent = 0;   
String res, lev;   
Image labmag;   
AudioClip audio1, audio2;   
Label prompt1,prompt2;   
TextField qus, ans, info;   
Button next, enter, record;   

public void init()   
{   
//初始化图片   
	labmag = getImage (getCodeBase(),"1.jpg");   
	//初始化音乐   
	audio1 = getAudioClip(getDocumentBase(),"Error.au");   
	audio2 = getAudioClip(getDocumentBase(),"Right.au");   
	qus = new TextField(15);   
	//初始化按钮，文本框   
	ans = new TextField(10);   
	info = new TextField(30);   
	enter = new Button("确定");   
	next = new Button("新题目");   
	record = new Button("记录");   
	prompt1 = new Label("问题:");   
	prompt2 = new Label("结果:");   
	//建立按钮和文本框   
	add(prompt1);   
	add(qus);   
	add(ans);   
	add(enter);   
	add(next);   
	add(record);   
	add(prompt2);   
	add(info);   
	//三个按钮的监听   
	next.addActionListener(this);   
	enter.addActionListener(this);   
	record.addActionListener(this);   
}   

public void paint(Graphics g)   
{   
	//绘图   
	g.drawImage(labmag, 0,0,430,280,this);   
}   

public void actionPerformed(ActionEvent e)   
{   
	if (e.getSource()==next)   
	{   
		//随机数生成   
		num1 = (int)(Math.random()*9);   
		num2 = (int)(Math.random()*9);   
		num3 = (int)(Math.random()*3);   
		switch(num3)   
		{   
			case 0 : op = '+'; jilu = num1+num2; break;   
			case 1 : op = '-'; jilu = num1-num2;break;   
			case 2 : op = '*'; jilu = num1*num2;break;   
		}   
		//考虑到整数除法带来的小数问题，暂时取消了生成除法   
		qus.setText(""+num1+op+num2+"=");   
		key = 1;   
	}   
	if (e.getSource()==enter)   
	{   
		if(ans.getText()!="")   
			jieguo = Integer.parseInt(ans.getText());   
		if (jieguo == jilu)   
		{   
			res="真棒，答对了！";   
			audio2.play(); //播放音乐   
			if (key == 1) //答对只记一次分   
			{   
			right++;   
			key = 0;   
			}   
		}   
		else   
		{   
			res = "答错了。别灰心！";   
			audio1.play(); //播放音乐   
			error++; //答错扣分   
		}   
		info.setText(""+res);   
	}	 
	if (e.getSource()==record)   
	{   
	//级别判定   
	if (right > 0 && right <= 10)   
		lev = "懒羊羊";   
	if (right > 10 && right <= 23)   
		lev = "暖羊羊";   
	if (right > 23 && right <= 38)   
		lev = "沸羊羊";   
	if (right > 38 && right <= 56)   
		lev = "美羊羊";   
	if (right > 56 && right <= 76)   
		lev = "喜绵绵";   
	if (right > 76 && right <= 100)   
		lev = "软绵绵";   
	if (right > 100)   
		lev = "天神";   
	info.setText("答对" + right + "题" + " 答错" + error + "题" + " 等级:" + lev);   
	}   
}   
}
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