public void TestTopHits100Percent()
{
var str1 = "card card card card card";
var substrings1 = _counter.GenerateSubstrings(str1.Split(' '), 4);
var topTen = _counter.GetTopNHits(substrings1, 10).ToList();
Assert.Equal(1, topTen[0].Value);
Assert.Equal("card", topTen[0].Key);
}
static void Main(string[] args)
{
var reader = new FileReader();
var counter = new WordsCounter();
var words = reader.ReadWords(args[0]);
var substrings = counter.GenerateSubstrings(words, 4);
var topTen = counter.GetTopNHits(substrings, 10);
Console.WriteLine("Frequencies:");
topTen.ToList().ForEach(item => Console.WriteLine($"{item.Key} {Math.Round(item.Value * 100, 2)}%"));
}