using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        GetWordsFrequencyCount("My bike and My book");

        GetWordsLengthFrequencyCount("My bike and my book");

    }

    static int NumberOfWords (string word, string[] text)

        {

            var answer = from c in text

                         where c == word

                         select c;

​

            return answer.Count();

        }

        static Dictionary<string,int> GetWordsFrequencyCount(string text)

        {

            var FixedText = text.Split(' ');

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

​

            foreach (var word in FixedText) 

                if (!result.ContainsKey(word.ToLower()))

                    result.Add(word.ToLower(), NumberOfWords(word, FixedText));

            return result;

        }

​

        static int NumberOfWordsWithSameLength (int length, string[] text)

        {

            var answer = from c in text

                         where c.Length == length

                         select c;

​

            return answer.Count();

        }

​

        static Dictionary<int, int> GetWordsLengthFrequencyCount(string text)

        {

            var FixedText = text.Split(' ');

            Dictionary<int, int> result = new Dictionary<int, int>();

​

            foreach (var length in FixedText)

                if (!result.ContainsKey(length.Length))

                    result.Add(length.Length, NumberOfWordsWithSameLength(length.Length, FixedText));

​

​

            return result;

        }

}