mithilesh kumar singh

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   class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Enter number of lines");

            int line = int.Parse(Console.ReadLine());

            for (int row = 1; row <= line; row++)

            {

                for (int space = line - row; space >= 1; space--)

                {

                    Console.Write(" ");

                }

                for (int col = 1; col <= row; col++)

                {

                    Console.Write(col);

                }

                for (int col1 = row - 1; col1 >= 1; col1--)

                {

                    Console.Write(col1);

                }

                Console.WriteLine();

            }

            Console.ReadLine();

        }