/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

package recyclednumbers;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author Masilo
 */
public class RecycledNumbers {

    public static void main(String[] args) {
        Scanner inputStream = null;
        PrintWriter outputStream = null;
      
        try{
            inputStream = new Scanner(new FileInputStream("input.txt"));
            outputStream = new PrintWriter(new FileOutputStream("output.txt"));
            
            int t = Integer.parseInt(inputStream.nextLine());
            String outputLine = "";
            String[] inputNumbers = null;
            int numberOfRecycledPair =0;
            int number =0, length =0;
            
            
            for (int i = 1; i<=t;i++){
                inputNumbers = inputStream.nextLine().split(" ");
                numberOfRecycledPair = 0;
                outputLine = "Case #"+i+": ";
                ArrayList<String> pairs = new ArrayList<String>();
                
                length = inputNumbers[0].length();
                if (length >1){
                    for (int n = Integer.parseInt(inputNumbers[0]);n<Integer.parseInt(inputNumbers[1]);n++){
                        for (int j = 1;j<length;j++){
                            number = Integer.parseInt(Integer.toString(n).substring(length-j)+Integer.toString(n).substring(0,length-j));
                            if (number>n && number<=Integer.parseInt(inputNumbers[1]))
                                if (!(pairs.contains(n+":"+number))){
                                    numberOfRecycledPair++;
                                    pairs.add(n+":"+number);
                                }
                        }
                    }
                }
                outputLine += ""+numberOfRecycledPair;
                outputStream.println(outputLine);
            }
            
            outputStream.close();
            inputStream.close();
            
        }
        catch(Exception e){
            System.out.println("file input.txt was not found");
        }
    }
}
