/*
 * 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.lewis.codeJamInJava;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.StringTokenizer;

/**
 * @author patrick
 * 
 */
public class RecycledNumers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {

			File outpuFile = new File("output.txt");
			FileWriter fileWriter = new FileWriter(outpuFile);
			BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

			BufferedReader bufferedReader;
			File inputFile = new File("input.txt");
			FileReader fileReader = new FileReader(inputFile);
			bufferedReader = new BufferedReader(fileReader);

			int numTestCases = Integer.parseInt(bufferedReader.readLine());

			for (int i = 1; i <= numTestCases; i++) {

				StringTokenizer st = new StringTokenizer(
						bufferedReader.readLine());

				int A = Integer.parseInt(st.nextToken());
				int B = Integer.parseInt(st.nextToken());
				int recycledPairs = recycle(A, B);

				bufferedWriter.write("Case #" + i + ": " + recycledPairs
						+ "\r\n");
			}

			bufferedWriter.flush();
			bufferedWriter.close();

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	private static int recycle(int a, int b) {
		int recycledPairs = 0;

		for (int i = a; i < b; i++) {

			String tmp = Integer.toString(i);
			int digits = tmp.length();
			int currentPairs[] = new int[digits];

			for (int j = 0; j < digits; j++) {
				// move digits and check

				int movedInt = Integer.parseInt(tmp.substring(j + 1)
						+ tmp.substring(0, j + 1));
				CHECKPAIR: if (movedInt <= b && movedInt > i) {
					for (int k = 0; k < digits; k++) {
						if (movedInt == currentPairs[k]) {
							break CHECKPAIR;
						}
					}
					currentPairs[j] = movedInt;
					recycledPairs++;
				}
			}
		}

		return recycledPairs;
	}

}
