How to get first character from words in flutter dart?

Let's say we have a name set to "Ben Bright". I want to output to the user "BB", with the first characters of each word. I tried with the split() method, but I failed to do it with dart.

String getInitials(bank_account_name) {
  List<String> names = bank_account_name.split(" ");
  String initials;
  for (var i = 0; i < names.length; i++) {
    initials = '${names[i]}';
  }
  return initials;
}

Just a slight modification since you only need the first letters

String getInitials(bank_account_name) {
  List<String> names = bank_account_name.split(" ");
  String initials = "";
  int numWords = 2;
  
  if(numWords < names.length) {
    numWords = names.length;
  }
  for(var i = 0; i < numWords; i++){
    initials += '${names[i][0]}';
  }
  return initials;
}

Edit:

• You can set the value of num_words to print the intials of those many words.
• If the bank_account_name is a 0 letter word, then return an empty string
• If the bank_account_name contains lesser words than num_words, print the initials of all the words in bank_account_name.