title: Maximum Number Characters Two Character String
signature: function maximumNumberCharactersTwoCharacterString(str) {
source_py: def maximum_number_characters_two_character_string(str):
      n = len(str)
      res = (- 1)
      for i in range(0, (n - 1)):
          for j in range((i + 1), n):
              if (str[i] == str[j]):
                  res = max(res, abs(((j - i) - 1)))
      return res
source_cpp: int maximum_number_characters_two_character_string(string & str) {
    int n = str . length ( );
    int res = - 1;
    for ( int i = 0;
    i < n - 1;
    i ++ ) for ( int j = i + 1;
    j < n;
    j ++ ) if ( str [ i ] == str [ j ] ) res = max ( res, abs ( j - i - 1 ) );
    return res;
  }