package com.saturday;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ReadTxt {
    public static void main(String args[]){
        try{            
            List lsRecords=readData("D:/Data.txt");
            sortRecord(lsRecords,"asc");
            writeData(lsRecords);
        }catch(FileNotFoundException ex){
            System.out.println("无法读取数据文件!");
        }catch(Exception ex){
            System.out.println(ex.getMessage());
        }
    }
    
    public static List readData(String sFilePath) throws Exception{
        BufferedReader bufreader=null;
        List lsRecords=new ArrayList();
        
        try{
            StringBuffer sbData=new StringBuffer();
            String sLineData=null;
            bufreader=new BufferedReader(new FileReader(sFilePath));
            Pattern p=Pattern.compile(
                "^\\s*(.*?)\\s+(\\d+)\\s*$",
                Pattern.MULTILINE);
            
            while((sLineData=bufreader.readLine())!=null){
                sbData.append(sLineData+"\n");
            }
            
            Matcher m=p.matcher(sbData);
            while(m.find()){
                lsRecords.add(m.group(1)+":"+m.group(2));                
            }
        }catch(Exception ex){
            throw ex;
        }finally{
            try{
                if(bufreader!=null)
                    bufreader.close();
            }catch(Exception ex){}
        }
        
        return lsRecords;
    }
    
    public static void sortRecord(List lsRecords,String sSortSty){
        Comparator AscCmp=new Comparator(){
            public int compare(Object o1,Object o2){
                String str1=(String)o1;
                String str2=(String)o2;
                int int1=Integer.parseInt(
                    str1.substring(str1.indexOf(':')+1));
                int int2=Integer.parseInt(
                    str2.substring(str2.indexOf(':')+1));
                                
                return int1<int2?-1:1;
            }    
        };
        
        Comparator DesCmp=new Comparator(){
            public int compare(Object o1,Object o2){
                String str1=(String)o1;
                String str2=(String)o2;
                int int1=Integer.parseInt(
                    str1.substring(str1.indexOf(':')+1));
                int int2=Integer.parseInt(
                    str2.substring(str2.indexOf(':')+1));
                                
                return int1<int2?1:-1;
            }    
        };        
        
        if(sSortSty.equals("des"))
            Collections.sort(lsRecords,DesCmp);    
        else
            Collections.sort(lsRecords,AscCmp);    
    }
    
    public static void writeData(List lsRecords) throws Exception{
        BufferedWriter bufwriter=null;
        
        try{
            bufwriter=new BufferedWriter(new FileWriter("D:/SortedData.txt"));
            String sLineData=nu