> import java.util.*;
> import java.io.*;
> 
> public class Main
> {	
> 	private ArrayList<String> numbers;
> 	private BufferedReader stdin;
> 	
> 	public Main(){
> 		numbers = new ArrayList<String>();
> 		stdin = new BufferedReader( new InputStreamReader(System.in));
> 
> 	}
> 
> 	public char map(char ch){		
> 		
> 		if(ch>='A'&&ch<='C')   return '2'; 
> 	    else if(ch>='D'&&ch<='F')   return '3';
> 	    else if(ch>='G'&&ch<='I')   return '4';
> 	    else if(ch>='J'&&ch<='L')   return '5';
> 	    else if(ch>='M'&&ch<='O')   return '6';
> 	    else if(ch>='P'&&ch<='S'&&ch!='Q')   return '7';
> 	    else if(ch>='T'&&ch<='V')   return '8';
> 	    else if(ch>='W'&&ch<='Y')   return '9';
> 
> 		return ch;
> 	}
> 
> 	public void numbers_in(){	
> 
> 		try{
> 			String str = stdin.readLine();			
> 
> 			int size = Integer.valueOf(str).intValue();
> 		
> 			for(int k=0; k<size; k++){
> 				str = stdin.readLine();
> 				StringBuffer strBuf = new StringBuffer();
> 				
> 				int pos = 0;
> 				for(int i=0; i<str.length(); i++)
> 				{
> 					char ch = str.charAt(i);
> 				
> 					if(pos==3){
> 						strBuf.append('-');
> 						pos++;
> 					}
> 	
> 					if((ch = this.map(ch))!= '-'){
> 						strBuf.append(ch);
> 						pos++;
> 					}
> 				}
> 		
> 				numbers.add(new String(strBuf));
> 			}
> 		}catch(Exception e){
> 
> 		}
> 
> 		Collections.sort(numbers);
> 		
> 	}
> 
> 	public void numbers_out(){
> 
> 		int count = 1;
> 		boolean duplicated = false;
> 
> 		for(int i=0; i<numbers.size()-1;i++)
> 		{				
> 			if(numbers.get(i).compareTo(numbers.get(i+1)) == 0){			
> 				count++;							
> 			}else{
> 				if(count>1){
> 					System.out.println(numbers.get(i) + " " + count );
> 					count = 1;
> 					duplicated = true;
> 				}
> 			}
> 
> 		}
> 
> 		if(!duplicated){
> 			System.out.println("No duplicates.");
> 		}
> 
> 	}
> 
> 	public static void main(String[] args){
> 
> 		Main t = new Main();
> 		t.numbers_in();
> 		//System.out.println();
> 		t.numbers_out();
> 	}
> 
> 
> }

• Re:sample只是sample，并不是测试数据．你是pku的，还不知道　？ (19) small_dao 2007-03-02 11:31:16
• -_- pku的为什么就一定知道 (34) wywcgs 2007-03-02 12:23:31
  • 我本以为pku的ACMer都清楚poj的！ (64) 417370112 2007-03-02 14:01:28