一个程序，问题比较弱，高手有空看看__BufferedReader_new_PrintWriter_public_out_

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一个程序，问题比较弱，高手有空看看

来源: 互联网发布时间：2015-02-05

本文导语: reader类的作用？printwriter类的作用？reverse和sort中的两个线程是否一起执行，换句话说，是不是reverse操作一行文本，就立刻传送给sort？ import java.io.*; public class RhymingWords { public static void main(String[] args) throw...

reader类的作用？printwriter类的作用？reverse和sort中的两个线程是否一起执行，换句话说，是不是reverse操作一行文本，就立刻传送给sort？
import java.io.*;
public class RhymingWords {
    public static void main(String[] args) throws IOException {
        FileReader words = new FileReader("words.txt");
        // do the reversing and sorting
        Reader rhymedWords = reverse(sort(reverse(words)));
        // write new list to standard out
        BufferedReader in = new BufferedReader(rhymedWords);
        String input;
        while ((input = in.readLine()) != null)
            System.out.println(input);
        in.close();
    }
    public static Reader reverse(Reader source) throws IOException {
        BufferedReader in = new BufferedReader(source);
        PipedWriter pipeOut = new PipedWriter();
        PipedReader pipeIn = new PipedReader(pipeOut);
        PrintWriter out = new PrintWriter(pipeOut);
        new ReverseThread(out, in).start();
        return pipeIn;
    }
    public static Reader sort(Reader source) throws IOException {
        BufferedReader in = new BufferedReader(source);
        PipedWriter pipeOut = new PipedWriter();
        PipedReader pipeIn = new PipedReader(pipeOut);
        PrintWriter out = new PrintWriter(pipeOut);
        new SortThread(out, in).start();
        return pipeIn;
    }
}

import java.io.*;
public class SortThread extends Thread {
    private PrintWriter out = null;
    private BufferedReader in = null;
    public SortThread(PrintWriter out, BufferedReader in) {
        this.out = out;
        this.in = in;
    }
    public void run() {
        int MAXWORDS = 50;
        if (out != null && in != null) {
            try {
                String[] listOfWords = new String[MAXWORDS];
                int numwords = 0;
                 while ((listOfWords[numwords] = in.readLine()) != null)
                    numwords++;
                quicksort(listOfWords, 0, numwords-1);
                for (int i = 0; i = hi)
            return;
        String mid = a[(lo + hi) / 2];
        while (lo