boolean isPunctuation(char in) {
  char[] punc = { '!', '\'', '\"', '(', ')', '-', '/', ':', ';', '.', ',' };
  for (int i = 0; i < punc.length; i++) {
    if (punc[i] == in) {
      return true;
    }
  }
  return false;
}

boolean isVowel(char in) {
  char[] vowels = { 'a', 'e', 'i', 'o', 'u' };
  for (int i = 0; i < vowels.length; i++) {
    if (vowels[i] == in) {
      return true;
    }
  }
  return false;
}

class Text {
  
  ArrayList tokens;
  
  Text(String in) {
    tokens = new ArrayList();
    String[] tok = in.split("\\s*\\b\\s*");
    for (int i = 0; i < tok.length; i++) {
      if (tok[i].length() == 0) {
        continue;
      }
      else if (tok[i].length() == 1 && isPunctuation(tok[i].charAt(0))) {
        tokens.add(new Punctuation(tok[i].charAt(0)));
      }
      else {
        tokens.add(new Word(tok[i]));
      }
        
    }
  }

}

class Token { }

class Punctuation extends Token {
  
  char punc;
  
  Punctuation(char punc_) {
    punc = punc_;
  }
  
  String toString() {
    char[] tmp = { punc };
    return new String(tmp);
  }
  
}

class Word extends Token {
  
  String word;
  
  Word(String word_) {
    word = word_;
  }
  
  Word charsObliterated(float prob) {
    String newString = "";
    for (int i = 0; i < word.length(); i++) {
      if (prob > noise(word.hashCode(), (int)word.charAt(i))) {
        newString += " ";
      }
      else {
        newString += word.charAt(i);
      }
    }
    return new Word(newString);
  }
  
  Word charsMixedUp(float prob) {
    String newString = "";
    char[] charray = word.toCharArray();
    for (int i = 0; i < charray.length; i++) {
      if (prob > noise(word.hashCode() + (int)charray[i], 100)) {
        int randidx = floor(noise(word.hashCode(), (int)charray[i])*charray.length);
        char tmp = charray[i];
        charray[i] = charray[randidx];
        charray[randidx] = tmp;
      }
    }
    return new Word(new String(charray));
  }
  
  Word mixUpSparesOutside(float prob) {
    String newString = "";
    char[] charray = word.toCharArray();
    for (int i = 1; i < charray.length - 1; i++) {
      if (prob > noise(word.hashCode()*i, i*10)) {
        int randidx = floor(noise(word.hashCode()*i, i*10)*(charray.length-2));
        char tmp = charray[i];
        charray[i] = charray[randidx+1];
        charray[randidx+1] = tmp;
      }
    }
    return new Word(new String(charray));
  }
  
  Word replaceVowelsWithE(float prob) {
    String newString = "";
    for (int i = 0; i < word.length(); i++) {
      if (isVowel(word.charAt(i)) && prob > noise(word.hashCode()*i, (int)word.charAt(0))) {
        newString += "e";
      }
      else {
        newString += word.charAt(i);
      }
    }
    return new Word(newString);
  }
  
  String toString() {
    return word;
  }
  
}