终于把JAVA这次的作业赶好了... 

一半是自己改编的 ，一半是百度的

no!!!

这次是多线程的作业，下次大作业就死定了！ 还有算法分析的论文 T T  靠靠靠靠

附上自己改编的JAVA T T 虽然还是有点问题

但是现在也没时间改了，以后再改

就是读写锁的问题

//Article.java

public class Article

{

int size;//文章总数

int number=0;

int i=0;

boolean available = false;

public Article(int size)

{

this.size=size;

}

// Writer 修改文章

public synchronized void write()

{

number=number+1;

System.out.println("Writer writes articles");

}

public void finishwrite()

{

number=number-1;

if(number+i<size)

available = true;

}

public synchronized void read()

{

if(available==true)

{

System.out.println("Reader reads articles");

i=i+1;

}

}

public void finishread()

{

i--;

}

}

//Reader.java

class Reader implements Runnable

{

Article article;

public Reader(Article article)

{

this.article = article;

}

@Override

public void run()

{

article.read();

article.finishread();

}

}

 

//Writer.java

class Writer extends Thread

{

Article article;

public Writer(Article article)

{

this.article = article;

}

@Override

public void run()

{

article.write();

article.finishwrite();

}

}

 

//test.java

class Writer extends Thread

{

Article article;

public Writer(Article article)

{

this.article = article;

}

@Override

public void run()

{

article.write();

article.finishwrite();

}

}

 

虽然对JAVA有很多地方都不懂，但是觉得还是比C、C++要友好