تحديات برمجيةالتحدي الثالث - حل التمرين الثالث بلغة C#

using System;

class Program
{
    static void Main(string[] args)
    {
        string text = "I am happy. I am a doctor. I like chocolate.";
        PrintWordsOccurence(text);

        Console.ReadKey();
    }

    static void PrintWordsOccurence(String s)
    {
        if (string.IsNullOrEmpty(s))
        {
            Console.WriteLine("There is no text!");
            return;
        }

        string[] words = s.Split(' ');
        int count;

        for (int i = 0; i < words.Length; i++)
        {
            count = 1;

            for (int j = i + 1; j < words.Length; j++)
            {
                if (words[i].Equals(words[j]))
                {
                    count = count + 1;
                    words[j] = "";
                }
            }

            if (!words[i].Equals(""))
            {
                Console.WriteLine("[" + count + "] " + words[i]);
            }

        }
    }

}

[3] I
[2] am
[1] happy.
[1] a
[1] doctor.
[1] like
[1] chocolate.