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 * and open the template in the editor.
 */
package codejam;

/**
 *
 * @author eblanco
 */
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import javax.swing.JFileChooser;

public class RecycledNumbers {

    public static String DatosArchivo[] = new String[10000];

    public static int[] convertStringArraytoIntArray(String[] sarray) throws Exception {
        if (sarray != null) {
            int intarray[] = new int[sarray.length];
            for (int i = 0; i < sarray.length; i++) {
                intarray[i] = Integer.parseInt(sarray[i]);
            }
            return intarray;
        }
        return null;
    }

    public static boolean CargarArchivo(String arch) throws FileNotFoundException, IOException {
        FileInputStream arch1;
        DataInputStream arch2;
        String linea;
        int i = 0;

        if (arch == null) {
            //frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
            JFileChooser fc = new JFileChooser(System.getProperty("user.dir"));
            int rc = fc.showDialog(null, "Select a File");
            if (rc == JFileChooser.APPROVE_OPTION) {
                arch = fc.getSelectedFile().getAbsolutePath();
            } else {
                System.out.println("No hay nombre de archivo..Yo!");
                return false;
            }
        }
        arch1 = new FileInputStream(arch);
        arch2 = new DataInputStream(arch1);
        do {
            linea = arch2.readLine();
            DatosArchivo[i++] = linea;
            /* if (linea != null) {
            System.out.println(linea);
            }*/
        } while (linea != null);
        arch1.close();
        return true;
    }

    public static boolean GuardaArchivo(String arch, String[] Datos) throws FileNotFoundException, IOException {
        FileOutputStream out1;
        DataOutputStream out2;
        int i;
        out1 = new FileOutputStream(arch);
        out2 = new DataOutputStream(out1);

        for (i = 0; i < Datos.length; i++) {
            if (Datos[i] != null) {
                out2.writeBytes(Datos[i] + "\n");
            }
        }
        out2.close();
        return true;
    }

    public static void echo(Object msg) {
        System.out.println(msg);
    }

    public static void main(String[] args) throws IOException, Exception {
        String[] res = new String[10000], num = new String[2];
        int i, j, k, ilong;
        int ele = 1;
       ArrayList al = new ArrayList();
        String FName = "C-small-attempt0",  istr, irev, linea;
        if (CargarArchivo("C:\\eblanco\\Desa\\CodeJam\\Code Jam\\test\\" + FName + ".in")) {
            for (j = 1; j <= Integer.parseInt(DatosArchivo[0]); j++) {
                linea = DatosArchivo[ele++];
                num = linea.split(" ");
                   al.clear();
                // echo("A: "+num[0]+" B: "+num[1]);
                for (i = Integer.parseInt(num[0]); i <= Integer.parseInt(num[1]); i++) {
                    istr = Integer.toString(i);
                    ilong = istr.length();
                 
                    for (k = 1; k < ilong; k++) {
                        if (ilong > k) {
                            irev = istr.substring(istr.length() - k, istr.length()) + istr.substring(0, istr.length() - k);
                            //echo("caso: " + j + ": isrt: " + istr + " irev: " + irev);
                            if ((Integer.parseInt(irev) > Integer.parseInt(num[0])) && (Integer.parseInt(irev) > Integer.parseInt(istr)) && (Integer.parseInt(irev) <= Integer.parseInt(num[1]))) {
                                al.add("(" + istr + "," + irev + ")");
                            }
                        }
                    }
                }
                HashSet hs = new HashSet();
                hs.addAll(al);
                al.clear();
                al.addAll(hs);
                res[j] = "Case #" + j + ": " + al.size();
                echo(res[j]);
                LeerArchivo.GuardaArchivo("C:\\eblanco\\Desa\\CodeJam\\Code Jam\\test\\" + FName + ".out", res);
            }
        }
    }
}

package codejam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.FilenameFilter;
import java.math.BigInteger;
import java.util.HashSet;
import java.util.Set;

public class Codejam {

	private static File[] getInputFiles(String filePath) {
		File dir = new File(filePath);
		// filter .in files
		FilenameFilter onlyInFiles = new FilenameFilter() {
			public boolean accept(File file, String name) {
				return name.endsWith(".in") || file.isFile();
			}
		};
		File[] inputFiles = dir.listFiles(onlyInFiles);
		return inputFiles;
	}

	private static BigInteger binomial(final int N, final int K) {
		BigInteger ret = BigInteger.ONE;
		for (int k = 0; k < K; k++) {
			ret = ret.multiply(BigInteger.valueOf(N - k)).divide(
					BigInteger.valueOf(k + 1));
		}
		return ret;
	}

	private static Set<String> getCombinations(String numberStr, int min,
			int max) {
		// System.out.println("numberStr " + numberStr);
		Set<String> allStrings = new HashSet<String>();
		char[] numberStrChars = numberStr.toCharArray();
		String currentNumber;
		int StrLength = numberStrChars.length;
		// System.out.println("StrLength " + StrLength);
		for (int i = 0; i < StrLength - 1; i++) {
			char firstChar = numberStrChars[0];
			for (int j = 1; j < StrLength; j++)
				numberStrChars[j - 1] = numberStrChars[j];
			numberStrChars[StrLength - 1] = firstChar;
			currentNumber = new String(numberStrChars);
			// System.out.println("currentNumber " + currentNumber);
			if (!currentNumber.equals(numberStr)
					&& Integer.parseInt(currentNumber) >= min
					&& Integer.parseInt(currentNumber) <= max)
				allStrings.add(currentNumber);
		}
		return allStrings;
	}

	private static BigInteger getRecycledPairs(int min, int max) {
		//System.out.println("getRecycledPairs start");
		BigInteger recycledPairs = BigInteger.ZERO;
		Set<String> recycledPairStrings = new HashSet<String>();
		for (int i = min; i <= max; i++) {
			String currentNumber = Integer.toString(i);
			if (!recycledPairStrings.contains(currentNumber)) {
				Set<String> currentCombinations = getCombinations(
						currentNumber, min, max);
				if (currentCombinations.size() > 0) {
					recycledPairStrings.addAll(currentCombinations);
					recycledPairs = recycledPairs.add(binomial(
							currentCombinations.size() + 1, 2));
				}
			}
		}
		//System.out.println("getRecycledPairs end " + recycledPairs);
		return recycledPairs;
	}

	private static void processFile(File fileName) {
		System.out.println("Processing file " + fileName);
		try {
			// get reader for current file
			BufferedReader br = new BufferedReader(new FileReader(fileName));
			// create writer using current file + .out
			BufferedWriter bw = new BufferedWriter(new FileWriter(
					fileName.getAbsolutePath() + ".out"));
			// get test cases
			int testCases = Integer.parseInt(br.readLine());
			// process all test cases
			for (int currTestCase = 1; currTestCase <= testCases; currTestCase++) {
				String[] ab = br.readLine().split(" ");
				int A = Integer.parseInt(ab[0]), B = Integer.parseInt(ab[1]);
				BigInteger result = getRecycledPairs(A, B);
				String currTestCaseResult = "Case #" + currTestCase + ": "
						+ result;
				System.out.println(currTestCaseResult);
				bw.write(currTestCaseResult);
				bw.newLine();
			}
			// close the reader and writer
			br.close();
			bw.flush();
			bw.close();
		} catch (Exception e) {// catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		System.out.println("start");
		// get files to process
		File[] inputFiles = getInputFiles("data");
		if (inputFiles != null) {
			for (File inputFile : inputFiles)
				processFile(inputFile);
		}
	}

}
