using System;

public class Program

{

    public static void Main()

        {

           int[] arr = { 3, 4,2,1,6 };

            int s = arr.Length; 

​

            Console.WriteLine("Memebers of a before mutation are:");

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

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

​

​

            var result = solution(s, arr);

            Console.WriteLine("\nMemebers of b after mutation are:");

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

                Console.Write(result[i] + ", ");

        }

​

         static int[] solution(int s, int[] arr)

        {

            int[] result = new int[arr.Length];

            //iterate the arr

​

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

            {

                int k = 0;

                int[] temp = new int[arr.Length-1];

​

​

                for (int j =  0; j < s; j++)

                {

                    //create new array excluding the current index

​

                    if (arr[j] != arr[i])

                    {

                        temp[k] = arr[j];

                        k++;

                    }

                }

                //find the product of the new array 

​

                var p = 1;

                for(int m=0; m < temp.Length; m++)

                {

                    p=p*temp[m];

                }

                //store it at the i-th position of the new array

                result[i] = p;

            }

​

             return result;

        }

}