package jp.funnything.competition.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.apache.commons.io.IOUtils;

public class QuestionReader {
    private final BufferedReader _reader;

    public QuestionReader( final File input ) {
        try {
            _reader = new BufferedReader( new FileReader( input ) );
        } catch ( final FileNotFoundException e ) {
            throw new RuntimeException( e );
        }
    }

    public void close() {
        IOUtils.closeQuietly( _reader );
    }

    public String read() {
        try {
            return _reader.readLine();
        } catch ( final IOException e ) {
            throw new RuntimeException( e );
        }
    }

    public BigDecimal[] readBigDecimals() {
        return readBigDecimals( " " );
    }

    public BigDecimal[] readBigDecimals( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigDecimal[] values = new BigDecimal[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigDecimal( tokens[ index ] );
        }

        return values;
    }

    public BigInteger[] readBigInts() {
        return readBigInts( " " );
    }

    public BigInteger[] readBigInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigInteger[] values = new BigInteger[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigInteger( tokens[ index ] );
        }

        return values;
    }

    public int readInt() {
        final int[] values = readInts();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public int[] readInts() {
        return readInts( " " );
    }

    public int[] readInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final int[] values = new int[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Integer.parseInt( tokens[ index ] );
        }

        return values;
    }

    public long readLong() {
        final long[] values = readLongs();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public long[] readLongs() {
        return readLongs( " " );
    }

    public long[] readLongs( final String separator ) {
        final String[] tokens = readTokens( separator );

        final long[] values = new long[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Long.parseLong( tokens[ index ] );
        }

        return values;
    }

    public String[] readTokens() {
        return readTokens( " " );
    }

    public String[] readTokens( final String separator ) {
        return read().split( separator );
    }
}

package ch.googlecodejam.qualround;

import java.util.ArrayList;
import java.util.List;

public class RecycledNumbers {

    public static String solve(List<List<String>> values) {

        StringBuilder result = new StringBuilder();

        int numberOfLine = 1;
        for (List<String> line : values) {
            int minValue = Integer.parseInt(line.get(0));
            int maxValue = Integer.parseInt(line.get(1));

            int numberOfRecycledNumbers = getNumberOfRecycledNumbers(minValue,
                    maxValue);

            result.append("Case #" + numberOfLine + ": "
                    + numberOfRecycledNumbers + "\n");
            numberOfLine++;
        }

        return result.toString();
    }

    private static int getNumberOfRecycledNumbers(int minValue, int maxValue) {

        int numberOfRececlyedNumbers = 0;
        for (int numberToTest = minValue; numberToTest < maxValue; numberToTest++) {
            numberOfRececlyedNumbers += hasRecycledNumber(numberToTest,
                    maxValue);
        }
        return numberOfRececlyedNumbers;
    }

    private static int hasRecycledNumber(int number, int maxValue) {

        String originalNumber = String.valueOf(number);
        int numberOfRecycledNumber = 0;
        List<String> alreadyRecycled = new ArrayList<String>();

        for (int i = originalNumber.length() - 1; i > 0; i--) {
            String recycledNumber = getSwapedNumber(i, originalNumber);

            if (recycledNumber.charAt(0) != '0') {
                int valueRecycledNumber = Integer.parseInt(recycledNumber);
                if (valueRecycledNumber > number
                        && valueRecycledNumber <= maxValue && !alreadyRecycled.contains(recycledNumber)) {
                    numberOfRecycledNumber++;
                    alreadyRecycled.add(recycledNumber);
                } 
            }

        }

        return numberOfRecycledNumber;
    }

    public static String getSwapedNumber(int startIndex, String original) {

        StringBuilder swaped = new StringBuilder();
        swaped.append(original.substring(startIndex));
        swaped.append(original.substring(0, startIndex));
        return swaped.toString();
    }
}
