”万能查重器“小程序

//今天组长让我写一个查重的的程序来给一个词库查重 把相同的删除

//一开始我绞尽脑汁想用嵌套的for循环怎么都有bug 原因是&&和&的理解错误

//后来我想到了用Map集合 应为它的键值不可能相同 这样就轻松解决了重复的问题 恩恩哈哈········

//Map <String,String> pp=new HashMap<String,String>; 他就是一个很好的查重的机器啊

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Shangchu {

        /**
         * @param args
         */
        BufferedReader br = null;
        StringBuffer sb1 = new StringBuffer();
        StringBuffer sb2 = new StringBuffer();
        public PrintWriter pw=null;
        public Map<String,String> ciku=new HashMap<String,String>();
        public List<String> hanzi=new ArrayList<String>();
        
        public static void main(String[] args) {
                // TODO Auto-generated method stub
                Shangchu sc=new Shangchu();             
                sc.chaChong("pinyinciku.txt");
        }
        
        public void chaChong(String txt) {
                int s=0;
                try {
                        br= new BufferedReader(new FileReader(txt));
                } catch (FileNotFoundException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                        System.out.println("文件读取失败");
                }
                try {
                        while((s = br.read()) != -1)
                        {
                                if(s != '\n')
                                                if(!((s < 'a'||s>'z')&& (s != ' ')&&(s != '\'')))
                                                {
                                                        sb1.append((char)s);                                    //添加拼音
                                                
                                                }
                                                else 
                                                {
                                                                sb2.append((char)s);                            //添加汉字
                                                }                                   
                                else
                                {               
                                        ciku.put(sb2.toString(), sb1.toString());                                               
                                        sb1.delete(0,sb1.capacity()-1);                                                                                 
                                        sb2.delete(0,sb2.capacity()-1);
                                }       
                        
                        }
                } catch (IOException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                        System.out.println("字符串添加失败");
                }
                finally 
                {
                        if (br!=null)
                        {
                                try {
                                        br.close();
                                } catch (IOException e) {
                                        // TODO Auto-generated catch block
                                        e.printStackTrace();
                                        System.out.println("br关闭失败");
                                }
                        }
                        
                }
                try {
                        pw=new PrintWriter(new FileWriter(new File ("a.txt")));
                        Set<Map.Entry<String,String>> entryset=ciku.entrySet();
                           Iterator<Map.Entry<String,String>> its =entryset.iterator();
                           while (its.hasNext())
                           {
                            Map.Entry<String,String> mm=its.next();
                            String hanzi= mm.getKey();
                           
                            String pinyin=mm.getValue();
                            pw.append(pinyin);
                            pw.append(hanzi);
                            pw.append('\n');
                            System.out.println(pinyin+" ````` "+hanzi);
                           }
                        
                        
                } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
                
                   finally {
                                if (pw!=null)
                                {
                                        pw.close();
                                }
                
                        }
                

        }
}