package jp.funnything.competition.util;

import java.math.BigInteger;

/**
 * Utility for BigInteger
 */
public class BI {
    public static BigInteger ZERO = BigInteger.ZERO;
    public static BigInteger ONE = BigInteger.ONE;

    public static BigInteger add( final BigInteger x , final BigInteger y ) {
        return x.add( y );
    }

    public static BigInteger add( final BigInteger x , final long y ) {
        return add( x , v( y ) );
    }

    public static BigInteger add( final long x , final BigInteger y ) {
        return add( v( x ) , y );
    }

    public static int cmp( final BigInteger x , final BigInteger y ) {
        return x.compareTo( y );
    }

    public static int cmp( final BigInteger x , final long y ) {
        return cmp( x , v( y ) );
    }

    public static int cmp( final long x , final BigInteger y ) {
        return cmp( v( x ) , y );
    }

    public static BigInteger div( final BigInteger x , final BigInteger y ) {
        return x.divide( y );
    }

    public static BigInteger div( final BigInteger x , final long y ) {
        return div( x , v( y ) );
    }

    public static BigInteger div( final long x , final BigInteger y ) {
        return div( v( x ) , y );
    }

    public static BigInteger mod( final BigInteger x , final BigInteger y ) {
        return x.mod( y );
    }

    public static BigInteger mod( final BigInteger x , final long y ) {
        return mod( x , v( y ) );
    }

    public static BigInteger mod( final long x , final BigInteger y ) {
        return mod( v( x ) , y );
    }

    public static BigInteger mul( final BigInteger x , final BigInteger y ) {
        return x.multiply( y );
    }

    public static BigInteger mul( final BigInteger x , final long y ) {
        return mul( x , v( y ) );
    }

    public static BigInteger mul( final long x , final BigInteger y ) {
        return mul( v( x ) , y );
    }

    public static BigInteger sub( final BigInteger x , final BigInteger y ) {
        return x.subtract( y );
    }

    public static BigInteger sub( final BigInteger x , final long y ) {
        return sub( x , v( y ) );
    }

    public static BigInteger sub( final long x , final BigInteger y ) {
        return sub( v( x ) , y );
    }

    public static BigInteger v( final long value ) {
        return BigInteger.valueOf( value );
    }
}

package googlecodejam;

import java.util.LinkedList;

/**
 *
 * @author Matej
 */
public class ProblemC {

    int lower;
    int upper;

    public ProblemC(int lower, int upper) {
        this.lower = lower;
        this.upper = upper;
    }

    public int solve() {
        int result = 0;
        String number, newNumber;
        int nn;
        LinkedList<String> numbers=new LinkedList<>();
        
        for (int i = lower; i <= upper; i++) {
            number = Integer.toString(i);
            numbers.clear();
            for (int j = 1; j < number.length(); j++) {
                newNumber = (String) number.subSequence(j, number.length());
                newNumber += (String) number.subSequence(0, j);                
                if (!newNumber.startsWith("0") && !newNumber.equals(number) && !numbers.contains(newNumber)) {
                    nn = Integer.parseInt(newNumber);
                    numbers.add(newNumber);
                    if (nn >= lower && nn <= upper && nn>i) {
                        result++;
                    }
                }
            }
        }
        return result;
    }
}
