/*
 * Problem C. Recycled Numbers
 * 
 * Do you ever become frustrated with television because you keep seeing the
 * same things, recycled over and over again? Well I personally don't care about
 * television, but I do sometimes feel that way about numbers.
 * 
 * Let's say a pair of distinct positive integers (n, m) is recycled if you can
 * obtain m by moving some digits from the back of n to the front without
 * changing their order. For example, (12345, 34512) is a recycled pair since
 * you can obtain 34512 by moving 345 from the end of 12345 to the front. Note
 * that n and m must have the same number of digits in order to be a recycled
 * pair. Neither n nor m can have leading zeros.
 * 
 * Given integers A and B with the same number of digits and no leading zeros,
 * how many distinct recycled pairs (n, m) are there with A â¤ n < m â¤ B?
 * 
 * Input
 * 
 * The first line of the input gives the number of test cases, T. T test cases
 * follow. Each test case consists of a single line containing the integers A
 * and B.
 * 
 * Output
 * 
 * For each test case, output one line containing "Case #x: y", where x is the
 * case number (starting from 1), and y is the number of recycled pairs (n, m)
 * with A â¤ n < m â¤ B.
 * 
 * Limits
 * 
 * 1 â¤ T â¤ 50.
 * 
 * A and B have the same number of digits.

Small dataset

1 â¤ A â¤ B â¤ 1000.

Large dataset

1 â¤ A â¤ B â¤ 2000000.

Sample


Input 
 	
Output 
 
4
1 9
10 40
100 500
1111 2222
Case #1: 0
Case #2: 3
Case #3: 156
Case #4: 287
 */

package google.codejam.y2012.qualifications;

import google.codejam.commons.Utils;

import java.io.IOException;
import java.util.StringTokenizer;

/**
 * @author Marco Lackovic <marco.lackovic@gmail.com>
 * @version 1.0, Apr 14, 2012
 */
public class RecycledNumbers {

	private static final String INPUT_FILE_NAME = "C-large.in";
	private static final String OUTPUT_FILE_NAME = "C-large.out";

	public static void main(String[] args) throws IOException {
		String[] input = Utils.readFromFile(INPUT_FILE_NAME);
		String[] output = new String[input.length];
		int x = 0;
		for (String line : input) {
			StringTokenizer st = new StringTokenizer(line);
			int a = Integer.valueOf(st.nextToken());
			int b = Integer.valueOf(st.nextToken());
			System.out.println("Computing case #" + (x + 1));
			output[x++] = "Case #" + x + ": " + recycledNumbers(a, b);
		}
		Utils.writeToFile(output, OUTPUT_FILE_NAME);
	}

	private static int recycledNumbers(int a, int b) {
		int count = 0;
		for (int n = a; n < b; n++) {
			count += getNumGreaterRotations(n, b);
		}
		return count;
	}

	private static int getNumGreaterRotations(int n, int b) {
		int count = 0;
		char[] chars = Integer.toString(n).toCharArray();
		for (int i = 0; i < chars.length; i++) {
			chars = rotateRight(chars);
			if (chars[0] != '0') {
				int m = Integer.valueOf(new String(chars));
				if (n == m) {
					break;
				} else if (n < m && m <= b) {
					count++;
				}
			}
		}
		return count;
	}

	private static char[] rotateRight(char[] chars) {
		char last = chars[chars.length - 1];
		for (int i = chars.length - 2; i >= 0; i--) {
			chars[i + 1] = chars[i];
		}
		chars[0] = last;
		return chars;
	}

}

package recyclednumbers;

import java.io.*;
import java.math.BigInteger;
import java.util.Iterator;
import java.util.Scanner;

/**
 *
 * @author Diego Villatora
 */
public class RecycledNumbers {
    static int  numberOfCases =0;
    static boolean first = true;
    static int currentInt = 0;
    static int firstNumber = 0;
    static int secondNumber = 0;
    static int[] founds = new int[]{};   
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        Scanner s = null;
        BufferedWriter output = null;
        int counter = 0;
        
        // for the output and the writing on file
        // Create file 
        File file =null;
        FileWriter fstream = null;

        try {
            //input
            s = new Scanner(new BufferedReader(new FileReader("C:\\Users\\Utente\\Downloads\\C-large.in")));
            //output
            file = new File("C:\\Users\\Utente\\Downloads\\google3.out");
            fstream = new FileWriter(file);
            output = new BufferedWriter(fstream);

            //while not EOF
            int i=0;
            while (s.hasNext()) {
                if(first){
                    numberOfCases = s.nextInt();
                    first=false; 
                }else{
                    currentInt = s.nextInt();
                    
                    //get int
                    counter++;
                    if(counter == 1){
                        firstNumber = currentInt;
                    }
                    else{
                        secondNumber = currentInt;
                        counter = 0;
                    }
                    if (counter == 0){
                        i++;
                        int maxNumberRecycled = getMaxRecycled(firstNumber,secondNumber);

                        output.write("Case #"+ i +": " + maxNumberRecycled);            
                        output.newLine();                        
                    }
                }
            }
     }catch (Exception e){//Catch exception if any
            System.out.println("Error: " + e.getMessage());
            System.out.println("Error: " + e.toString());

        //to close the file if still open
        }finally {
            if (s != null) s.close();
            if (output != null) output.close();
        }
    }
        
    private static int getMaxRecycled(int firstNumber, int secondNumber){
        int total = 0;
        int partial = 0;
        int numberRotating = 0;
                
        while(firstNumber<secondNumber) {
            //lastRoundInt = firstNumber;
            numberRotating = shiftNumber(firstNumber);
            while (numberRotating != firstNumber){
                if(firstNumber < numberRotating && numberRotating <= secondNumber){
                    //partial = findEquals(numberRotating, firstNumber , secondNumber);
                    total = total + 1;                                       
                }
                if(firstNumber > numberRotating){
                    if((new Integer(numberRotating).toString().length()) < (new Integer(firstNumber).toString().length())){
                        numberRotating = numberRotating * 10;
                    }
                    else{
                        numberRotating = shiftNumber(numberRotating);                         
                    }
                }else{
                numberRotating = shiftNumber(numberRotating); 
                }
            }
            firstNumber++;            
        }      
        return total;
    }
    
    private static int findEquals(int toFind, int start, int end){
        int found = 0;
        
        /*for(int i = 0; i< founds.length; i++){
            if (toFind == founds[i]){
                return found;
            }
        }*/
        
        if(toFind <= end){
            /*int[] appo = new int[]{toFind};
            int[] C= new int[appo.length+founds.length];
            System.arraycopy(appo, 0, C, 0, appo.length);
            System.arraycopy(founds, 0, C, appo.length, founds.length);
            founds = C;*/
            found = 1;
        }
        return found;
    }
    private static int shiftNumber(int toShift){
        double toAdd = 0;
        double partial = 0;
        double restoInit = toShift;
        double numExp = 0;
        
        while(restoInit > 9){
            restoInit = Math.floor(restoInit / 10);
            numExp++;
        }
        
        toAdd = Math.floor(toShift / Math.pow(10.0, numExp));
        toShift = toShift * 10;        
        partial = toShift % Math.pow(10.0, numExp+1);
        partial = partial + toAdd;
        
        return new Double(partial).intValue();
    }
}
