/*
 * 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 com.googlecodejam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;


/* Main function goes here */
public class RecycledNumbersProblemC {
	public static void main(String[] args) {
		try {
			BufferedReader bfreader = new BufferedReader(new FileReader("E:\\workspace\\TopCoder\\src\\com\\googlecodejam\\C-small-attempt0.in"));
			BufferedWriter bfrwriter = new BufferedWriter(new FileWriter("E:\\workspace\\TopCoder\\src\\com\\googlecodejam\\output.txt"));
			
			
			int n = Integer.parseInt(bfreader.readLine());
			String out = "";
			for (int i = 0; i < n; i++) {
				String s = bfreader.readLine();
				out += "Case #" + (i + 1) + ": " + getRecycledPair(s) + "\n";
			}
			 System.out.println(out);
			 bfrwriter.write(out);
			 bfreader.close();
				bfrwriter.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	/* Main function goes here */
	public static String getRecycledPair(String s) {

		int iMinNumber = Integer.parseInt(s.split(" ")[0]);
		int iMaxNumber = Integer.parseInt(s.split(" ")[1]);
		int iLength;
		Integer iNoRecycledNo = 1;
		Integer iNoOfRecycledPairs = 0;
		ArrayList<Integer> alInputNos = new ArrayList<Integer>();

		for (int i = iMinNumber; i <= iMaxNumber; i++) {
			alInputNos.add(i);
		}

		for (int number : alInputNos) {
			StringBuffer sNumber = new StringBuffer(Integer.toString(number));
			iLength = sNumber.length();
			ArrayList<Integer> alRecycledPairs = new ArrayList<Integer>();

			for (int i = 1; i < sNumber.length(); i++) {
				StringBuffer recNum = new StringBuffer();
				recNum.append(sNumber.substring(i, sNumber.length()));
				recNum.append(sNumber.substring(0, i));
				int irecNumber = Integer.parseInt(recNum.toString());
				String sTempNum = Integer.toString(irecNumber);
				if (iLength == sTempNum.length()) {
					if ((!(alRecycledPairs.contains(irecNumber))) && irecNumber <= iMaxNumber && irecNumber >= iMinNumber && !(irecNumber == number) && (alInputNos.contains(irecNumber))) {
						alRecycledPairs.add(irecNumber);
						iNoOfRecycledPairs = iNoRecycledNo / 2;
						iNoRecycledNo++;
					}
				}
			}
		}
		
		return Integer.toString(iNoOfRecycledPairs);
	}
}
