package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

ï»¿import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

/*
 * Google Code Jam 2012
 * Qualification 2012
 * raguenets@gmail.com
 * Usage : java RecycledNumbers inputFileName outputFileName
 */
public class RecycledNumbers {

  public static void main(String[] args) {
    int T = 0;
    int A = 0;
    int B = 0;

    if (args.length == 2) {
      String inputFilename = args[0];
      File finput = new File(inputFilename);
      String outputFilename = args[1];
      File foutput = new File(outputFilename);
      Scanner scanner = null;
      BufferedWriter bw = null;
      try {
        bw = new BufferedWriter(new FileWriter(foutput));
      }
      catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
      }
      if (finput.exists()) {
        try {
          scanner = new Scanner(finput);
          // Reads first line : number of Tests
          if (scanner.hasNextInt()) {
            T = scanner.nextInt();
            scanner.nextLine();
          }
          for (int i = 0; i < T; i++) {
            // Read number of flies
            A = scanner.nextInt();
            B = scanner.nextInt();
            // Read fly positions
            bw.write("Case #" + (i + 1) + ": " + numberOfRecycled(A, B) + "\n");
          }
        }
        catch (FileNotFoundException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
        catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
        finally {
          try {
            bw.close();
            if (scanner != null) {
              scanner.close();
            }
          }
          catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
          }
        }
      }
    }
  }

  public static int[] getDigits(int number) {
    List<Integer> digits = new ArrayList<Integer>();
    while (number > 0) {
      digits.add(number % 10);
      number = (number - number % 10) / 10;
    }
    int[] d = new int[digits.size()];
    for (int i = 0; i < digits.size(); i++) {
      d[i] = digits.get(digits.size() - 1 - i);
    }
    return d;
  }

  public static int getValue(int[] digits) {
    int value = 0;
    for (int i = 0; i < digits.length; i++) {
      value += digits[i];
      if (i != digits.length - 1) {
        value *= 10;
      }
    }
    return value;
  }

  public static int numberOfRecycled(int A, int B) {
    if (B < 10) {
      return 0;
    }
    else {
      int count = 0;
      for (int i = A; i < B; i++) {
        int[] digits = getDigits(i);
        Set<Integer> set = new HashSet<Integer>();
        for (int j = 1; j < digits.length; j++) {
          int[] newDigits = new int[digits.length];
          for (int k = 0; k < digits.length; k++) {
            newDigits[k] = digits[(k + j) % digits.length];
          }
          int value = getValue(newDigits);
          if (value <= B && value > i) {
            set.add(value);
//            count++;
          }
        }
        for (Integer val:set) {
          count++;
        }
      }
      return count;
    }
  }
}
