java算法面试题：编写一个程序，将a.txt文件中的单词与b.txt文件

package com.swift;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.util.ArrayList;import java.util.List;public class IO_jiaoti {    public static void main(String[] args) throws Exception {        /*         * 编写一个程序，将a.txt文件中的单词与b.txt文件中的单词交替合并到c.txt文件中，a.txt文件中的单词用回车符分隔，b.         * txt文件中用回车或空格进行分隔。         */        BufferedReader br1 = new BufferedReader(                new InputStreamReader(new FileInputStream("e:\\neck\\a.txt"), "gb2312"));        BufferedReader br2 = new BufferedReader(                new InputStreamReader(new FileInputStream("e:\\neck\\b.txt"), "gb2312"));        BufferedWriter bw = new BufferedWriter(                new OutputStreamWriter(new FileOutputStream("e:\\neck\\c.txt"), "gb2312"));        List<String> list1 = new ArrayList<String>();        List<String> list2 = new ArrayList<String>();        List<String> list3 = new ArrayList<String>();                String str1;        while ((str1 = br1.readLine()) != null) {            list1.add(str1);        }        StringBuffer sb = new StringBuffer();        int len;        char[] buf = new char[1024];        while ((len = br2.read(buf)) != -1) {            sb.append(buf, 0, len);        }        String[] bstr = sb.toString().split("\\s");        for (String str : bstr) {            System.out.println(str);            if (str.matches("[a-zA-Z]{1,}")) {                list2.add(str);            }        }        if (list1.size() <= list2.size()) {            for (int i = 0; i < list1.size(); i++) {                list3.add(list1.get(i));                list3.add(list2.get(i));            }            for(int i=list1.size();i<list2.size();i++) {                list3.add(list2.get(i));            }        }else {            for (int i = 0; i < list2.size(); i++) {                list3.add(list1.get(i));                list3.add(list2.get(i));            }            for(int i=list2.size();i<list1.size();i++) {                list3.add(list1.get(i));            }        }        for(String str:list3) {            System.out.print(str+" ");            bw.write(str);            bw.write("\r\n");            bw.flush();        }    }}

人的一辈子唯一做的就是，不断地用你手中