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 org.moriraaca.codejam.recyclednumbers;

import java.util.HashSet;

import org.moriraaca.codejam.AbstractSolver;
import org.moriraaca.codejam.OutputDestination;
import org.moriraaca.codejam.SolverConfiguration;

@SolverConfiguration(parser = RecycledNumberDataParser.class, inputFileName = "ultra-large.in", outputDestination=OutputDestination.FILE)
public class RecycledNumbersSolver extends
		AbstractSolver<RecycledNumbersTestCase> {
	
	public static void main(String[] args) {
		new RecycledNumbersSolver().getSolution();
	}
	
	private int digitsNumber;
	
	private int headShift;
	
	private HashSet<Integer> usedNumbers = new HashSet<Integer>();

	@Override
	protected String solveTestCase(RecycledNumbersTestCase testCase) {
		int counter = 0;
		
		digitsNumber = String.valueOf(testCase.A).length();
		
		headShift = 1;
		
		for (int i = 0; i < digitsNumber; i++) {
			headShift *= 10;
		}
		
		for (int i = testCase.A; i <= testCase.B; i++) {
			counter += rotateNumber(i, testCase.B);
		}
		
		return String.valueOf(counter);
	}

	private int rotateNumber(int number, int B) {
		int counter = 0;
		
		int orginalNumber = number;
		
		usedNumbers.clear();
		
		for(int i = 1; i < digitsNumber; i++) {
			number += (number % 10) * headShift;
			number /= 10;
			
			if (number > orginalNumber && number < B && !usedNumbers.contains(number)) {
				counter++;
				usedNumbers.add(number);
			}
		}
		
		return counter;
	}
}
