using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

public class Program

{

    public static void Main()

    {

        // string val = "We source .our .ingredients ethically and support sustainable farming, fishing and responsible animal husbandry. We offer a range of plant-based options (confirm) and practice zero waste in our kitchens.";

        // string val = "IMMERSE YOURSELF IN A PREMIUM HEALTH EXPERIENCE THAT COMBINES SCIENTIFIC EXPERTISE WITH TRADITIONAL THAI HOSPITALITY.";

        // string val = "Hello world     .";

        string val = "In this example,  we declare a second list of numbers - sort of a black-list of numbers which we don't want to be included! In the Where() method, we use the Contains() method on the black-list, to decide whether a number can be included in the final list of numbers or not. And of course, it works for more complex objects than numbers and strings, and it's still very easy to use. Just have a look at this example, where we use objects with user information instead of numbers, and use the Where() method to get a list of users with names starting with the letter 'J', at the age of 39 or less:";

        List<string> specialChars = new List<string>() { 

             ",", ":", ";", "!", "(", ")", "."

            };

        specialChars.ForEach(str => val = val.Replace(str, ""));

        string[] words = val.Split(' ');

        words = words.Where(w => !string.IsNullOrEmpty(w) && !w.Equals("-")).ToArray();

        Console.WriteLine("Result: " + string.Join(",", words));

        Console.WriteLine("Word count: " + words.Count());

    }

}