dart_words_count_10.dart

void main() { 
  const text = """She sells sea shells on the sea shore;
The shells that she sells are sea shells I'm sure.

So if she sells sea shells on the sea shore,

I'm sure that the shells are sea shore shells""";
  
  var list = text.split(" ");
  var wordsCount = list.length;
  var uniqWordsCount = list.toSet().length;

  print("Всего слов в тексте: ${wordsCount}");
  print("Уникальных слов в тексте: ${uniqWordsCount}");
}