using System;

public class Program

{

    public static void Main()

    {

        int[] arr1=new int[]{1,2,3,4,2};

        int key;

        Console.WriteLine("enter the element to search:");

        key=Convert.ToInt32(Console.ReadLine());

        for(int i=0;i<=arr1.Length-1;i++)

        {

            if(key==arr1[i])

            {

                int last=Array.FindLastIndex(arr1,item=> item==key);

                Console.WriteLine("{0} is found in {1} position",key,last);

                Console.ReadLine();

            }

        }

        Console.WriteLine("{0} is not found",key);

        Console.ReadLine();

    }

}