/*
 * 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 prob2;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;

public class prob2 {
	public static void main(String args[]) {
		try {
			BufferedReader in = new BufferedReader(new InputStreamReader(new DataInputStream(new FileInputStream("./src/prob2/a-small.in"))));
			BufferedWriter out = new BufferedWriter(new FileWriter("./src/prob2/a-small.out"));

			int line = Integer.parseInt(in.readLine());

			for (int i = 0; i < line; i++) {
				int count = 0;
				String inLine[] = in.readLine().split(" ");
				out.append("Case #" + (i+1) + ": ");
				int min = Integer.parseInt(inLine[0]);
				int max = Integer.parseInt(inLine[1]);
				Set<Integer> inn = new HashSet<Integer>();
				if (max > 11) {
					for (int l = min; l <= max; l++) {
						inn.clear();
						String ll = l + "";
						for (int a = ll.length() - 1; a >= 1; a--) {
							if (ll.charAt(a) != '0') {
								int t = Integer.parseInt(ll.substring(a) + ll.substring(0, a));
								if (l >= min && t <= max && l<t) {
									inn.add(t);
								}
							}
						}
						count+=inn.size();
					}
					out.append("" + count);
				} else {
					out.append("0");
				}
				out.append("\n");
			}

			out.flush();
			in.close();
			out.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}

	}
}
