using System;

using System.Collections.Generic;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        Dictionary<string,int> wordFreqs = CountWords("the red fox hacked into the computer of the other red fox");

        foreach (KeyValuePair<string,int> d in wordFreqs) {

            Console.WriteLine($"word: {d.Key}, count: {d.Value}");

        }

    }

    static Dictionary<string,int> CountWords(string text) {

        Dictionary<string,int> wordFreqs = new Dictionary<string,int>();

        string[] words = Regex.Split(text, @"\W+");

        foreach (string word in words) {

            if (wordFreqs.ContainsKey(word)) {

                wordFreqs[word] = wordFreqs[word] + 1;

            } else {

                wordFreqs[word] = 1;

            }

        }

        return wordFreqs;

    }

}