int[] arr = new int[20];
            Random r = new Random();

            for (int i = 0; i < arr.Length; i++)
            {
                arr[i] = r.Next(-100, 101);
            }   
                int min = 101;
            int index = -1;
                for (int i = 0; i < 20; i++)
                {
                    if (Math.Abs(arr[i]) < min)
                    {
                        min = Math.Abs(arr[i]);
                    index = i; 

                    }
                }


            foreach(int a in arr)
            {
                Console.Write(a + "  ");
            }
            Console.WriteLine("\n" + min);
            Console.WriteLine("\n" + index);