string randomWords;
            randomWords = "apple banana apple orange pineapple blueberry raspberry lemon watermelon banana pineapple " +
                "strawberry blueberry orange mango kiwi melon raspberry apple orange";

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

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

            foreach(string word in words)
            {
                int count = 1;
                if (wordsCount.ContainsKey(word))
                {
                    count = wordsCount[word] + 1;
                    wordsCount[word] = count;
                }

            }
            foreach(var pair in wordsCount)
            {
                Console.WriteLine($"{pair.Key} - > {pair.Value}");
            }