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 com.google.codejam.recycle;

import java.util.List;

/**
 * Created by IntelliJ IDEA.
 * User: sushant
 * Date: 14 Apr, 2012
 * Time: 11:13:34 AM
 * To change this template use File | Settings | File Templates.
 */
public class RecycledNumbers {
    /**
     * Main method from where application start execution.
     *
     * @param args String []
     */
    public static void main(final String[] args) {
        if (args.length != 1)  {
            System.out.println("Problem with the command used for execution");
            System.out.println("Usage: java com.google.codejam.googlerese.RecycledNmbers <Path to input file>");
            System.exit(1);
        }

        final List<TestCase> testCases = InputReader.prepareTestCases(args[0]);
        if (testCases != null && testCases.size() != 0)  {
            long startTime = System.currentTimeMillis();
            System.out.println("Test Cases execution start time " + startTime);
            for (TestCase testcase : testCases) {
                executeTestCase(testcase);
            }
            OutputRecorder.generateTestReport(testCases, args[0] + ".out");
            long endTime = System.currentTimeMillis();
            System.out.print("Test cases execution end time " + endTime);
            System.out.println("Total Execution Time " + (endTime - startTime) + " milliseconds");
        }

    }

    /**
     * Method to execute test cases.
     *
     * @param testcase     TestCase
     */
    private static void executeTestCase(final TestCase testcase) {
        int recycleNumberCount = 0;
        final int low = testcase.getLow();
        final int high = testcase.getHigh();
        final int length = Integer.toString(low).length();
        for(int i = low; i <= high; i++) {
            int previoudNumber = 0;
            for(int j = 1; j < length; j++) {
                int divisor = getDivisor(length - j);
                int mod = i % divisor;
                int result = i / divisor;
                int recycleNumber = Integer.parseInt("" + mod + result);
                if(previoudNumber != recycleNumber && recycleNumber > i && recycleNumber <= high) {
                      previoudNumber = recycleNumber;
                    recycleNumberCount =  recycleNumberCount + 1;
                }
            }
        }
        testcase.setOutput(new TestResult(recycleNumberCount));
    }

    private static int getDivisor(int noOfZeros) {
        StringBuilder builder = new StringBuilder().append(1);
        for(int i = 0; i < noOfZeros; i++) {
            builder.append(0);
        }
        return Integer.parseInt(builder.toString());
    }
}


