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import java.util.Iterator;
import java.util.regex.Pattern;

/**
 * Classe que permite dividir um texto em tokens. A divisão é feita com 
 * base nos espaços encontrados no texto. O tokenizer tem 3 modos de funcionamento.
 * Estes modos permitem indicar o que fazer com os símbolos (tudo que não seja uma 
 * letra nem um número) existentes no início e fim de cada token.
 * 

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############################################################################
# This file has the R functions didYouMean() and didYouMean2().
# The function didYouMean() is a copy found in the "didYouMean.R" file of 
# the repository: https://github.com/samcarlos/didYouMean .
#
# The function didYouMean(input) is described below and was originally 
# developed by "Sam Carlos". I just wrote a few comments to help me understand 
# how this function is implemented. I also added the call to the options(...) 
# function, in order to solve a SSL error on Windows 7.  
#

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R Study Resources

Packages resources

• Tutorial on plyr http://seananderson.ca/2013/12/01/plyr.html
• Tutorial on reshape http://seananderson.ca/2013/10/19/reshape.html

Graphics resources

• Quick introduction to ggplot2()
  http://chrisladroue.com/extra/ggplot2Intro/introductionGGplot2/

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import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

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###############################################################################
#                       Elo rating system implementation in R                 #
###############################################################################
#
# INTRODUCTION
# The ELO rating system is a method for calculating the relative skill levels 
# of players in Player-Versus-Player games. This rating system is used on 
# chess and also in a number of games, videogames, etc.
# It was originally invented as an improved chess rating system in the 1960s 
# and established at the FIDE-congress 1970 in Siegen (Germany). 

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package com.itextpdf;

import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfArray;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfString;
import com.itextpdf.text.pdf.parser.FilteredTextRenderListener;
import com.itextpdf.text.pdf.parser.LocationTextExtractionStrategy;