/*
 * Writter By : Ahmad Jawed ZAFAR
 * Date : 17/01/2010
 * Web Site : www.yashlar.net
 * Description : this programs reads students information from two separate files called f1.txt
 * and f2.txt. the first file contains students id, name and surname. the second file contains
 * each students id and the city where the students lives. our programs reads both files and
 * prints the students list according to their city. i mean it prints each city and information
 * of the students who lives in that city.
 * if the students name or surname of his/her city consists of two or more words, then put underscores
 * or dashes to separate these words, be careful not to put space. put space character only
 * to separate each category (id, name, surname).
 * 
 *  Example File *
 * f1.txt
 * 55  arda  turan
 * 43  hakan shukur
 * 27 ahmad-jawed  zafar
 *   
 * f2.txt
 * 55 istanbul
 * 43 ankara
 * 27 faryab
 * 
 */

import java.util.*;
import java.io.*;

public class Students {

	
	public static String[] name=new String[20];
	public static String[] sName=new String[20];
	public static int[] id=new int[20];
///===========================================================================
	public static int[] idsTmp=new int[20];
	public static String[] cityTmp=new String[20];
	public static String[] city=new String[20];
	public static int[][] ids=new int [20][20];
	public static int numStudents = 0;
	
///---------------------------------------------------------------------------
	
	public static void main(String[] args) {
		
		file1("f1.txt");
		file2("f2.txt");
		
		for(int i=0;i<numStudents;i++){
			String tmp = cityTmp[i];	
			int jj=0;
			for(int j=0; j<numStudents; j++)
			{
				if (tmp.equalsIgnoreCase(cityTmp[j]))
				{
					if (!cityTmp[j].equalsIgnoreCase(""))
					{
						city[i] = cityTmp[j];
						ids[i][jj] = idsTmp[j];
						jj++;
						cityTmp[j] = "";
					}
				}	
			}
		}
///---------------------------------------------------------------------------
		try {
			BufferedWriter output = new BufferedWriter(new FileWriter("output.txt"));
			System.out.println("                    ****************************************** ");
			output.write("                    ****************************************** ");
			output.newLine();
			System.out.println("                    List Of Students According To Their Cities ");
			output.write("                    List Of Students According To Their Cities ");
			output.newLine();
			System.out.println("                    ****************************************** ");
			output.write("                    ****************************************** ");
			output.newLine();
		System.out.println("---------------------------------");
		output.write("---------------------------------");
		output.newLine();
		for (int i=0; i<numStudents; i++)
		{
			if (city[i] == null)
			{
				continue;
			}
		    System.out.println(city[i]+" :");
		    output.write(city[i]+" :");
		    output.newLine();
		    System.out.println("---------------------------------");
			output.write("---------------------------------");
			output.newLine();
	    	int count=1;
		    for (int k=0; k<ids[i].length; k++)
		    {

		    	for (int j=0; j<numStudents; j++)
				{
		    		if (ids[i][k] == id[j])
					{
		    			System.out.println(count + " : " + sName[j]+"\t\t " + name[j]) ;
		    			output.write(count + " : " + sName[j]+"\t\t " + name[j]);
		    			output.newLine();
		    			count++;
					}	
				}
		     }
		    System.out.println("---------------------------------");
			output.write("---------------------------------");
			output.newLine();
		}
		output.close();
		}
		catch (Exception e)
		{
			System.out.println("Error !");
		}
	}
///---------------------------------------------------------------------------
	
	public static void file1(String f1) {
		try
		{
			Scanner input = new Scanner(new File(f1));
			int i=0;	
			while(input.hasNextLine()){
				String line=input.nextLine();
			
				Scanner  lineScan = new Scanner(line);
				id[i]=lineScan.nextInt();
				name[i]=lineScan.next();
				sName[i]=lineScan.next();
				i++;
				numStudents++;
			}
			input.close();
		}
		catch(Exception e){
			System.out.println("File 1 Error !");
		}
	}
///---------------------------------------------------------------------------
	
	public static void file2(String f2) {
		try{
			Scanner input = new Scanner(new File(f2));
			int i=0;	
			while(input.hasNextLine()){
				String line=input.nextLine();
			
				Scanner  lineScan = new Scanner(line);
				idsTmp[i]=lineScan.nextInt();
				cityTmp[i]=lineScan.next();			
				i++;
			}
			input.close();
		}
		catch(Exception e){
			//System.out.println("File 2 Error !");
		}
		
	}

}