/*  Write a C# program to display characters and frequency of characters from a given string. 

•    The program should do case-insensitive comparisons and ignore white spaces.For ex: if the string is “Arden Hills”, ignore the white space and treat it as one string “ArdenHills”

•   Only alphanumeric characters are allowed.

•   Bonus points for using LINQ and strongly typed variables.

   It is OK to use Google for syntax etc. (no generative UI and searching exact code samples)*/

​

​

​

​

using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}