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.mademoisellegeek.googlecodejam.y2012.qualround;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashMap;

public class RecycledNumbers implements Runnable {

    BufferedReader in;
    BufferedWriter out;
    static String inputFile = "2012-qualround-C-small.in";
    static String outputFile = "2012-qualround-C-small.out";

    public void run() {

        try {
            in = new BufferedReader(new FileReader(inputFile));
            out = new BufferedWriter(new FileWriter(outputFile));
            try {
                String line = in.readLine();
                int nbCases = Integer.parseInt(line);
                for (int i=1; i<=nbCases; i++) {
                    line = in.readLine();
                    String [] lineArray = line.split(" ");
                    int min = Integer.parseInt(lineArray[0]);
                    int max = Integer.parseInt(lineArray[1]);
                    out.write("Case #" + i + ": " + solve(min, max) + "\n");
                }
            } finally {
                in.close();
            }
            out.flush();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    private int solve(int min, int max) {
        HashMap recycled = new HashMap();
        for (int i=min; i<=max; i++) {
            for (int j=1; j< nbDigits(i); j++) {
                int result = move(i, j);
                if (result != i && result <= max && result >= min) {
                    int small = Math.min(result, i);
                    int big = Math.max(result, i);
                    if (!recycled.containsKey(small)) {
                        ArrayList empty = new ArrayList();
                        empty.add(big);
                        recycled.put(small,empty);
                    }
                    else {
                        ArrayList list = (ArrayList) recycled.get(small);
                        if (!list.contains(big))
                            list.add(big);
                        recycled.put(small,list);
                    }
                }
            }
        }
        int result = 0;
        for (Object list : recycled.values()) {
            result += ((ArrayList)list).size();
        }
        return result;
    }

    private int move(int i, int j) {
        String whole = String.valueOf(i);
        String suffix = whole.substring(whole.length()-j);
        String prefix = whole.substring(0, whole.length()-j);
        return Integer.parseInt(suffix+prefix);
    }

    private int nbDigits(int j) {
        return String.valueOf(j).length();

    }
}
