Create Console application to accept....

Try this:

using System;

class Program

{

static void Main()

{

Console.WriteLine("Enter a sequence of characters and press return");

string input = Console.ReadLine();

char[] chars = input.ToCharArray();

// sort in ascending order

Array.Sort(chars);

Console.WriteLine("\nThe characters in increasing ASCII order are");

foreach(char c in chars) Console.Write(c);

// sort in descending order

Array.Reverse(chars);

Console.WriteLine("\n\nThe characters in decreasiong ASCII order are");

foreach(char c in chars) Console.Write(c);

Console.ReadKey();

}