/*
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 * 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 problemC;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class ProblemC {
	public static void main(String[] args) throws FileNotFoundException {
		// Scanner sc = new Scanner(new File("C-practice.in"));
		Scanner sc = new Scanner(new File("C-small.in"));
		// Scanner sc = new Scanner(new File("C-large.in"));
		int cases = sc.nextInt();
		for (int i = 1; i <= cases; i++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int count = 0;
			for (int j = A; j <= B; j++) {
				int number = recycle(j);
				while (number != j) {
					if (number > j && number <= B) {
						count++;
					}
					number = recycle(number);
				}
			}
			// do case things here
			System.out.format("Case #%d: %d\n", i, count);
		}
	}

	private static int recycle(int n) {
		int temp = n;
		int max = 1;
		while (temp >= 10) {
			max *= 10;
			temp /= 10;
		}
		int m = n / 10 + (max * (n % 10));
		temp = n;
		while (temp % 10 == 0) {
			temp = m;
			m = m / 10 + (max * (m % 10));
		}
		return m;
	}
}
