package it.simone.google.code.jam2012;

import java.util.HashSet;
import java.util.Set;

public class RecycledNumber implements GoogleCodeExercise {

	int a = 0;
	int b = 0;
	Set<Couple> distinctCouple = null;
	long maxTime = 0;

	private class Couple {
		int x = 0;
		int y = 0;

		public Couple(int x, int y) {
			this.x = x;
			this.y = y;
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + getOuterType().hashCode();
			result = prime * result + x;
			result = prime * result + y;
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Couple other = (Couple) obj;
			if (!getOuterType().equals(other.getOuterType()))
				return false;
			if (x == other.x && y == other.y)
				return true;
			if (x == other.y && y == other.x)
				return true;
			return false;
		}

		private RecycledNumber getOuterType() {
			return RecycledNumber.this;
		}

	}

	@Override
	public String execute(String line) {
		int result = 0;

		String[] data = line.split(" ");
		a = Integer.parseInt(data[0]);
		b = Integer.parseInt(data[1]);
		initialize();

		int n = a;
		//
		while (n <= b) {
			result += analize(n);
			n++;
//			if (n % 1000 == 0)
//				System.out.println(n);
		}

		System.out.println(result);
		return "" + result;
	}

	@Override
	public void initialize() {
		distinctCouple = new HashSet<Couple>();
	}

	private int analize(int number) {
		String numString = "" + number;
		initialize();
		for (int i = 1; i < numString.length(); i++) {
			int m = shift(numString, i);
			if (a <= number && number < m && m <= b) {
				Couple couple=new Couple(number,m);
				if (!distinctCouple.contains(couple))
					distinctCouple.add(couple);
			}
		}
		return distinctCouple.size();
	}

	private int shift(String numString, int posx) {

		String result = null;
		result = "" + numString.substring(posx) + numString.substring(0, posx);

		return Integer.parseInt(result.toString());
	}

}

package RecycledNumbers;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.Hashtable;

import DancingWithGooglers.Googler;



public class MainProcess {

	/**
	 * @param args
	 */
	
	private int A ;
	private int B ;
	
	public MainProcess(File f){
		readFile(f);
		
	}
	
	private void readFile(File f){
		
		int numCase = 0;
		
		try {
			FileReader fr = new FileReader(f);
			BufferedReader br = new BufferedReader(fr);
			
			String str = "";
			
			if( (str = br.readLine())!=null){
				numCase = Integer.parseInt(str);
			}
			
			int count = 0;
			while( count < numCase){
				str = br.readLine();
				String[] substr = str.split(" ");
				A = Integer.parseInt(substr[0]); 
				B = Integer.parseInt(substr[1]); 
				
				findAns(count ,substr[0].length());
				count++;
			}
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

	private void findAns(int count , int numDigit){
		
		int totalPair=0;
		
		if(numDigit<=1){
			System.out.println("Case #" + (count+1) + ": 0");
		}
		else{
			
			for(int i=A ; i<=B ; i++){
				totalPair += findPair(i , numDigit);
			}
			
			System.out.println("Case #" + (count+1) + ": " + totalPair);
		}
	}
	
	private int findPair(int number , int numDigit){
		Hashtable<Integer , Boolean> usedTable = new Hashtable<Integer , Boolean>();
		
		int numPair =0;
		
		for(int i=1 ; i<numDigit ; i++ ){
			int base = getPower(i);
			int secondPart = number % base;
			int firstPart = (number - secondPart) / base;
			
			int newNumber = secondPart*getPower(numDigit - i) + firstPart;
			
			if(newNumber<=B && newNumber > number){
				if(!usedTable.containsKey(newNumber)){
					numPair++;
					usedTable.put(newNumber, true);
				}

			}
		}
		
		return numPair;
	}
	
	private int getPower(int n){
		int number = 1;
		
		if(n==0) return number;
		else{
			for(int i=0 ; i< n ; i++){
				number *=10;
			}
			
			return number;
		}
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		File f = new File(".\\src\\RecycledNumbers\\C-large.in");
		MainProcess m = new MainProcess(f);
	}

}
