/*
 * 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 recycledNumbers;

import java.util.ArrayList;

public class test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		int a = 1111;
		int b = 2222;
		int result = 0;
		for(int i=a;i<b+1;i++){
			ArrayList<Integer> number = new ArrayList<Integer>();
			ArrayList<Integer> numbers = new ArrayList<Integer>();
			int temp = i; 
			while(temp/10>0){
				number.add(temp%10);
				temp = temp/10;
			}
			number.add(temp%10);
			
			for(int j=0;j<number.size();j++){
				numbers.clear();
				for(int k=0;k<number.size();k++){
					numbers.add(number.get(k));
				}
				ArrayList<Integer> part = new ArrayList<Integer>();
				for(int k=0;k<j;k++){
					int temp1 = numbers.remove(0);
					part.add(temp1);
				}
				numbers.addAll(part);
				
				int newint = 0;
				for(int k=0;k<numbers.size();k++){
					newint += numbers.get(k)*pow(10,k);
				}
				//System.out.println(i+" "+newint+" "+j);
				if(i<newint && newint<=b){
					System.out.println(i+" "+newint+" "+j);
					result++;
				}
			}
			//System.exit(0);
		}
		
		System.out.println(result);
	}

	private static int pow(int i, int k) {
		// TODO Auto-generated method stub
		if(k==0){
			return 1;
		}else{
			return pow(i, k-1)*i;
		}
	}

}
