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#!/usr/bin/perl
open (IN,"rfc3280.txt");
my $i;
while (<IN>){
	@arr = split / /, $_;
	for ($i=0;$i<=scalar(@arr);$i++) {
		if ($arr[$i] =~ /^\w{9}$/) {
			print $arr[$i]."\n";
		}
	}
}
close (IN);

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perl 59.pl|sort|uniq -c | sort -n|tail -n1

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#include <stdio.h>
#include <stdlib.h>

#define SIZE 100
#define MAXPALAVRA 99000

//alterar esses defines abaixo para o seu uso
#define ARQUIVO "wordlist" //o nome do arquivo, tem que estar na mesma pasta
#define TAMPALAVRA 9 //define o tamanho em caracteres da palavra


typedef struct
{
    char palavra[SIZE];
    int count;
}WORD;

void criaPalavra(WORD *novaPal, char* word)
{
    strcpy(novaPal->palavra, word);
    novaPal->count=0;
}

//cria uma lista com a palavra e um contador

typedef struct
{
    WORD lista[MAXPALAVRA];
    int len;
}LISTADEPALAVRAS;


void addPalavra(LISTADEPALAVRAS *list, WORD pal, int posi)
{
    list->lista[posi] = pal;
    list->len = 0;
}


void maisAparece(LISTADEPALAVRAS *list)
{
    WORD atual, comparada, maisAparece;
    int i = 0,
        j = 0;

    while (i < list->len)
    {
       atual = list->lista[i];

       j = i + 1;
       while(j < list->len)
       {

           comparada=list->lista[j];
           if (!strcmp(atual.palavra,comparada.palavra))
            {
               list->lista[j].count++;
            }
            j++;

       }
       i++;


    }



    maisAparece = list->lista[0];
    i = 1;
    while (i < list->len)
    {
        atual = list->lista[i];

        if (atual.count > maisAparece.count)
        {
            maisAparece = atual;
        }
        i++;
    }

    printf("%d - %s",maisAparece.count,maisAparece.palavra);

}

//cria uma lista com a lista anterior

main()
{
    FILE *arquivo;
    int index = 0;
    LISTADEPALAVRAS listap;
    arquivo=fopen(ARQUIVO,"r");

    while (!feof(arquivo))
    {
        char lida[100] = "";
        fscanf(arquivo, "%s\n", &lida);
        if(strlen(lida) == TAMPALAVRA)
        {
            WORD pal;

            criaPalavra(&pal, lida);
            addPalavra(&listap, pal, index);
            //printf("%d - %s\n",index, listap.lista[index].palavra);
            index++;

        }
    }
   listap.len = --index;
   maisAparece(&listap);
   //printf("%d",index);
}

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def words = new File("rfc3280.txt").getText().split()

def wordSet = words as Set
wordSet = wordSet.findAll { w -> w.size() == 9 }

def textMap = [:]
wordSet.each { textMap.put(it, words.count(it)) }
def result = textMap.values().max()
println textMap.findAll { it.value == result }

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import java.io.*;
import org.apache.commons.lang3.StringUtils;

public class tan {
	private static int words, countPrevious, countNow = 0;
	private static String line, stringOfWords, mostFrequentWord = " ";
	private static String[] linesplit = new String[2000];

	public static void countWords() {
		linesplit = line.split(" ");
		for (int i = 0; i < linesplit.length; i++) {
			if (linesplit[i].length() == 9) {
				words++;
				stringOfWords = stringOfWords + " " + linesplit[i];

			}
		}
	}

	public static void searchFrequent() {
		System.out.println(stringOfWords);
		String[] arrayOfWords = stringOfWords.split(" ");
		for (int i = 0; i < arrayOfWords.length; i++) {

			String searchword = arrayOfWords[i];
			countNow = 0;
			countNow = StringUtils.countMatches(stringOfWords, searchword);

			if (countNow >= countPrevious) {
				countPrevious = countNow;
				mostFrequentWord = searchword;
				System.out.println("Word: " + mostFrequentWord + " prev: "
						+ countPrevious + " now: " + countNow);
			}

		}

	}

	public static void main(String[] args) {
		try {
			FileReader input = new FileReader(
					"C:\\Users\\Daniel\\Documents\\Studie\\CODA\\Practicum\\server\\RFC.txt");
			BufferedReader bufRead = new BufferedReader(input);

			line = bufRead.readLine();

			while (line != null) {
				countWords();
				line = bufRead.readLine();
			}
			searchFrequent();

			System.out.println("This document has " + words
					+ " words of nine characters long.");
			System.out.println("According to this sucky program, the word "
					+ mostFrequentWord + " is most frequent, ");
			System.out.println("occurring " + countPrevious + " times.");
			bufRead.close();

		} catch (ArrayIndexOutOfBoundsException e) {
			/*
			 * If no file was passed on the command line, this exception is
			 * generated. A message indicating how to the class should be called
			 * is displayed
			 */
			System.out.println("Usage: java tan filename\n");

		} catch (IOException e) {
			// If another exception is generated, print a stack trace
			e.printStackTrace();
		}

	}
}

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text = open('rfc3280.txt').read().lower().replace('.', '').replace(',', '')
textlist = text.split()
niner_list = []
niner_dic = {}

for word in textlist:
	if len(word) == 9:
		niner_list.append(word)
		
for word in niner_list:
	niner_dic[niner_list.count(word)] = word
	
print niner_dic[max(niner_dic.keys())]

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file = File.new("rfc3280.txt", "r")
dict = Hash.new(0)
while (line = file.gets)
	line.scan(/[^\w]([\w]{9})[^\w]/) { |match|
		dict.store(match, dict[match].succ)
	}
end
puts dict.index(dict.values.max)
file.close

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words = {}

File.open('file', 'r').readlines.each do |line|
  line.split.each do |word|
    if word.size == 9
      if words[word]==nil
        words.merge!(Hash[word=>0])
      else
        words[word]+=1
      end
    end
  end
end

puts words.max_by{|k,v|v}

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#! python 

from collection import Counter
data = open('rfc3280').read()
print Counter(i for i in data.split() if len(i)==9).most_common(1)[0][0]