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 codeJam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;
import java.util.Iterator;

/**
 * http://code.google.com/codejam/contest/1460488/dashboard#s=p2
 * @author Weiwei Cheng
 */
public class RecycledNumbers {

    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new FileReader("_input.in"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("_output.in"));
        
        br.readLine();
        
        String line = null;
        int count = 0;
        
        while((line=br.readLine())!=null){
            int num = 0;
            String[] input = line.split(" ");
            int low = Integer.parseInt(input[0]);
            int high = Integer.parseInt(input[1]);
            
            for(int i=low; i<high; i++){
                int[] recnums = getRecycledNumbers(i);
                for(int j : recnums){
                    if(j<=high && j>=low && j>i){
                        num++;
                    }
                }
            }
            
            bw.append("Case #" + ++count + ": " + num);
            bw.newLine();
        }
        
        br.close();
        bw.close();

    }

    public static int[] getRecycledNumbers(int num){
        
        String str = Integer.toString(num);
        
        HashSet<Integer> set = new HashSet<Integer>();
        
        for(int i=0; i<str.length()-1; i++){
            int j = num / (int)(Math.pow(10, i+1));
            String s = str.subSequence(str.length()-i-1, str.length()) + "" + j;
            set.add(Integer.parseInt(s));
        }
        
        int[] ans = new int[set.size()];
        
        Iterator<Integer> itr = set.iterator();
        int i=0;
        while(itr.hasNext()){
            ans[i++] = itr.next();
        }
        
        return ans;
    }
    
}
