/*
 * 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.gao.t3;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.HashSet;

public class Main {
	public static void main(String args[]){
		try{
			FileInputStream fin=new FileInputStream("C:\\Users\\Gao\\Downloads\\C-small-attempt0.in");
			//FileInputStream fin=new FileInputStream("cc.txt");
			BufferedReader br=new BufferedReader(new InputStreamReader(fin));
			FileOutputStream fout=new FileOutputStream("out.txt");
			BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(fout));
			int n=Integer.parseInt(br.readLine());
			HashSet<String> hash=new HashSet<String>();
			for(int i=0;i<n;i++){
				int A,B;
				hash.clear();
				String s[]=br.readLine().split(" ");
				A=Integer.parseInt(s[0]);
				B=Integer.parseInt(s[1]);
				int j=A;
				for(;j<=B;j++){
					String strA=j+"";
					int m=strA.length();
					for(int k=0;k<m-1;k++){
						String end=strA.substring(m-1-k,m);
						if(end.startsWith("0")) continue;
						String start=strA.substring(0,m-1-k);
						String strB=end+start;
						if(strA.compareTo(strB)<0&&strA.compareTo(A+"")>=0&&strB.compareTo(B+"")<=0){
							hash.add(strA+" "+strB);
						}
					}
				}
				String str="Case #"+(i+1)+": "+hash.size();
				bw.write(str);
				if(i<n-1){bw.newLine();}
			}			
			br.close();
			bw.close();
			fin.close();
			fout.close();
		} catch(IOException e){
			e.printStackTrace();
		}
	}

}
