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();
	}

}

package qualifiers;

import java.io.*;
import java.util.*;
import java.util.concurrent.*;

public class QualifierC {
	class Task implements Runnable {
		private int num;
		private String line;

		public Task(int num, String line) {
			this.num = num;
			this.line = line;
		}

		@Override
		public void run() {
			String result = null;

			// BEGIN RESULT COMPUTATION
			// ------------------------------------------------------------

			String[] split_line = line.split(" ");
			int min = Integer.parseInt(split_line[0]);
			int max = Integer.parseInt(split_line[1]);
			int total = 0;
			for (int current = min; current < max; ++current) {
				HashSet<Integer> pairs = new HashSet<Integer>();
				char[] digits = String.valueOf(current).toCharArray();
				int[] values = new int[digits.length];
				for (int i = 0; i < digits.length; ++i) {
					values[i] = digits[i] - '0';
				}
				for (int first = 1; first < values.length; ++first) {
					int other = 0;
					for (int size = 0; size < values.length; ++size) {
						other *= 10;
						other += values[(first + size) % values.length];
					}
					if (other > current && min <= other && other <= max) {
						pairs.add(other);
					}
				}
				total += pairs.size();
			}
			result = String.valueOf(total);

			// END RESULT COMPUTATION
			// ------------------------------------------------------------

			System.out.println(result);
			reportResult(num, result);
		}
	}

	public static final int NUM_THREADS = 4;

	private String file_name;
	private ArrayList<String> results;

	public QualifierC(String file_name) {
		this.file_name = file_name;
	}

	public ArrayList<String> calculate() throws IOException,
			InterruptedException {
		results = new ArrayList<String>();
		ThreadPoolExecutor tpe = new ThreadPoolExecutor(NUM_THREADS,
				NUM_THREADS, 2, TimeUnit.SECONDS,
				new LinkedBlockingQueue<Runnable>());
		FileReader fr = new FileReader(file_name);
		BufferedReader br = new BufferedReader(fr);
		String line = br.readLine();
		System.out.println("Header: " + line);
		String[] ints = line.split(" ");

		// BEGIN HEADER PARSING
		// --------------------------------------------------------------------

		int total_num = Integer.parseInt(ints[0]);

		// END HEADER PARSING
		// --------------------------------------------------------------------

		for (int i = 0; i < total_num; ++i) {
			results.add("");

			// BEGIN READING CASE
			// ----------------------------------------------------------------

			line = br.readLine();
			tpe.execute(new Task(i, line));

			// END READING CASE
			// ----------------------------------------------------------------

		}

		br.close();
		fr.close();
		tpe.shutdown();
		tpe.awaitTermination(8, TimeUnit.MINUTES);
		return results;
	}

	public synchronized void reportResult(int num, String result) {
		results.set(num, result);
	}

	public static void main(String[] args) throws IOException,
			InterruptedException {
		long time0 = System.currentTimeMillis();
		if (args.length < 1) {
			System.out.println("Remember command line argument");
			System.exit(1);
		}
		QualifierC runner = new QualifierC(args[0]);
		ArrayList<String> results = runner.calculate();
		System.out.println("Run time: " + (System.currentTimeMillis() - time0)
				/ 1000 + "s\n");
		FileWriter fw = new FileWriter("results.txt");
		BufferedWriter bw = new BufferedWriter(fw);
		for (int i = 0; i < results.size(); ++i) {
			System.out.println("Case #" + (i + 1) + ": " + results.get(i));
			bw.write("Case #" + (i + 1) + ": " + results.get(i) + "\n");
		}
		bw.close();
		fw.close();
	}
}
