private static int findCharsWithinRange(final CharSequence chars, int startOffset, int endOffset, String charsToFind) {
    while(startOffset < endOffset) {
      if (charsToFind.indexOf(chars.charAt(startOffset)) != -1) {
        return startOffset;
      }
      ++startOffset;
    }

    return startOffset;
  }
private static int findCharsWithinRange(final CharSequence chars, int startOffset, int endOffset, String charsToFind)