12月

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