using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

         int [] arr = new int [] {5, 2, 8, 7, 1};   

        int temp = 0;  

        //Displaying elements of original array  

        Console.WriteLine("Elements of original array: ");  

        for (int i = 0; i < arr.Length; i++) {   

            Console.Write(arr[i] + " ");  

        }  

        //Sort the array in ascending order  

        for (int i = 0; i < arr.Length; i++) {   

            for (int j = i+1; j < arr.Length; j++) {   

               if(arr[i] <arr[j]) {  

                   temp = arr[i];  

                   arr[i] = arr[j];  

                   arr[j] = temp;  

               }   

            }   

        }  

      Console.WriteLine();  

        //Displaying elements of array after sorting  

        Console.WriteLine("Elements of array sorted in descending  order: ");  

        for (int i = 0; i < arr.Length; i++) {   

            Console.Write(arr[i] + " ");  

        }  

    }  

}

​

​