int getWordPos(int wordNum)

Source

int getWordPos(int wordNum) {
  loadWordIndex();
  int relNum = wordNum - 1;
  for (int i = 0; i < _totalWord.length; i++) {
    int totalWord = _totalWord[i];
    if (relNum < totalWord) {
      return i;
    } else {
      relNum -= totalWord;
    }
  }
  return 0;
}