Poj Solution 3438

http://poj.org/problem?id=3438

import java.util.*;   
  
public class Main {   
  
    public static void main(String[] args) {   
        Scanner cin = new Scanner(System.in);   
           
        int num = Integer.valueOf(cin.nextLine()).intValue();   
        String rawStr = null;   
           
           
        char repeatChar = 'n';   
        int repeat = 0;   
        char temp = 'n';   
        int newLineFlag = 0;   
           
        for(int i = 0; i < num; i++)   
        {   
            newLineFlag = 0;   
            StringBuffer sb = new StringBuffer();   
            boolean oneLetter = false;   
            rawStr = cin.nextLine();   
               
            for(int j = 0; j < rawStr.length(); j++)   
            {   
                temp = rawStr.charAt(j);   
                if(newLineFlag == 0)   
                {   
                    repeatChar = temp;   
                    repeat = 1;   
                    newLineFlag = 1;   
                    if(j == rawStr.length()-1)   
                        oneLetter = true;   
                    continue;   
                }   
                   
                if(temp == repeatChar)   
                {   
                    repeat++;   
                }else  
                {   
                    sb.append(repeat);   
                    sb.append(repeatChar);   
                    repeatChar = temp;   
                    repeat = 1;   
                }      
                   
                if(j == rawStr.length()-1)   
                {   
                    sb.append(repeat);   
                    sb.append(repeatChar);   
                }   
            }   
               
            if(oneLetter == true)   
            {   
                System.out.println("1" + temp);   
            }else  
            {   
                System.out.println(sb.toString());     
            }   
               
        }   
  
    }   
  
}