using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace employee

{

  public class random

  {

      public static void Main(string[] args)

      {

          List<int> list1 =new List<int>();

          Console.Write("the elements are");

      for(int i=0;i<10;i++)

      {

         int  a=Convert.ToInt32(Console.ReadLine());

          list1.Add(a);

      }

          foreach(int i in list1)

          {

              Console.Write(" "+i);

          }

          Console.WriteLine("\nthe length of the elemnts before deleting is {0}\n",list1.Count);

          Console.WriteLine("\nrandom nummbers are");

          Random r=new Random();

          List<int> list2=new List<int>();

          for(int i=0;i<5;i++)

          {

              int j=r.Next(0,5);

              list2.Add(j);

              Console.Write(" "+j);

          }

          Console.WriteLine("\nthe length of random numbers is {0}",list2.Count);

          Console.WriteLine("enter the random elements after sorted");

          list2.Sort();

          list2.Reverse();

          foreach(int i in list2)

          {

          Console.Write(" "+i);

          }

          Console.WriteLine("\nthe length of elements after sorted is {0} ",list2.Count);

          for(int i=0;i<list2.Count-1;i++)

          {

              if(list2[i]==list2[i+1])

              {

                  list2.Remove(list2[i--]);

              }

          }

          Console.WriteLine("\nAfter deleting repeating elements");

          foreach(int i in list2)

          {

          Console.Write(" "+i);

          }

          Console.WriteLine("\nthe list of count after deleted repeated random numbers is {0}",list2.Count);

         for(int i=0;i<list2.Count;i++)  

          {

              list1.RemoveAt(list2[i]);

          }

          foreach(int i in list1)

          {

              Console.Write(" "+i);

          }

          Console.WriteLine("\nThe length of list after deleted is {0}",list1.Count);

              }

  }

}