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 utils;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Fabien Renaud
 */
public class File {

  public static boolean delete(String filename) {
    java.io.File f = new java.io.File(filename);
    if (f != null) {
      return f.delete();
    }
    return false;
  }

  public static String[] readAllLines(String filename) {
    return readAllLines(new java.io.File(filename));
  }

  public static String[] readAllLines(java.io.File file) {
    List<String> list = new ArrayList<String>();

    try {
      BufferedReader input = new BufferedReader(new FileReader(file));
      try {
        String line = null;

        while ((line = input.readLine()) != null) {
          list.add(line);
        }
      } finally {
        input.close();
      }
    } catch (IOException ex) {
      Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
    }

    String[] s = new String[list.size()];
    return list.toArray(s);
  }

  public static String readAllText(String filename) {
    return readAllText(new java.io.File(filename));
  }

  public static String readAllText(java.io.File file) {
    StringBuilder content = new StringBuilder();
    String lf = System.getProperty("line.separator");

    try {
      BufferedReader input = new BufferedReader(new FileReader(file));
      try {
        String line = null;

        while ((line = input.readLine()) != null) {
          content.append(line);
          content.append(lf);
        }
      } finally {
        input.close();
      }
    } catch (IOException ex) {
      Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
    }

    return content.toString();
  }

  public static byte[] readAllBytes(String filename) {
    return readAllBytes(new java.io.File(filename));
  }

  public static byte[] readAllBytes(java.io.File file) {
    byte[] bytes = new byte[0];
    InputStream is = null;
    try {
      is = new FileInputStream(file);
      long length = file.length();
      if (length > Integer.MAX_VALUE) {
        // File is too large
      }

      bytes = new byte[(int) length];
      int offset = 0;
      int numRead = 0;
      while (offset < bytes.length && (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
        offset += numRead;
      }
      if (offset < bytes.length) {
        throw new IOException("Could not completely read file " + file.getName());
      }
      is.close();
    } catch (Exception ex) {
      Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
      try {
        is.close();
      } catch (IOException ex) {
        Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
      }
    }
    return bytes;
  }

  public static void writeAllLines(String filename, String[] lines) {
    writeAllLines(new java.io.File(filename), lines);
  }

  public static void writeAllLines(java.io.File file, String[] lines) {
    String lf = System.getProperty("line.separator");

    try {
      FileWriter fw = new FileWriter(file);
      for (String l : lines) {
        fw.write(l);
        fw.write(lf);
        fw.flush();
      }
      fw.close();
    } catch (IOException ex) {
      Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
    }
  }

  public static void writeAllText(String filename, String text) {
    writeAllText(new java.io.File(filename), text);
  }

  public static void writeAllText(java.io.File file, String text) {
    String lf = System.getProperty("line.separator");

    try {
      FileWriter fw = new FileWriter(file);
      fw.write(text);
      fw.flush();
      fw.close();
    } catch (IOException ex) {
      Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
    }
  }

  public static void writeAllBytes(String filename, byte[] bytes) {
    writeAllBytes(new java.io.File(filename), bytes);
  }

  public static void writeAllBytes(java.io.File file, byte[] bytes) {
    try {
      FileOutputStream fos = new FileOutputStream(file);
      fos.write(bytes);
      fos.close();
    } catch (Exception ex) {
      Logger.getLogger(File.class.getName()).log(Level.SEVERE, null, ex);
    }
  }
}
