String replaceFarsiNumber(String input) {
  const english = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
  const farsi = ['Û°', 'Û±', 'Û²', 'Û³', 'Û´', 'Ûµ', 'Û¶', 'Û·', 'Û¸', 'Û¹'];

  for (int i = 0; i < english.length; i++) {
    input = input.replaceAll(english[i], farsi[i]);
  }

  return input;
}

main() {
  print(replaceFarsiNumber('0-1-2-3-4-5-6-7-8-9'));  // ==>  Û°-Û±-Û²-Û³-Û´-Ûµ-Û¶-Û·-Û¸-Û¹
}