/*
 * 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 codejam2012.qualification;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;

public class ProblemC {
    public static void main(String[] args) throws Exception {
        System.setIn(new FileInputStream("C-small-attempt0.in"));
        System.setOut(new PrintStream(new FileOutputStream("C-small-attempt0.out")));
        Scanner in = new Scanner(System.in);
        int testCase = in.nextInt();
        Set<Integer> duplicates = new TreeSet<>();
        
        for(int i = 1; i <= testCase; i++) {
            int a = in.nextInt(),
                b = in.nextInt();
            int count = 0;
            
            for(int n = a; n < b; n++) {
                String s = String.valueOf(n);
                String s2 = s+s;
                
                duplicates.clear();
                for(int j = 1, len = s.length(); j < len; j++) {
                    int m = Integer.parseInt(s2.substring(j, j+len));
                    if(m > n && m <= b && !duplicates.contains(m)) {
                        count++;
                        duplicates.add(m);
                    }
                }
            }
            System.out.printf("Case #%d: %d%n", i, count);
        }
    }
}
