using System;

​

using System.Linq;

​

namespace ConsoleApplication1

{

    public class Program

    {

        public static void Main(string[] args)

        {

            string[] delhiResidents = { "Ramesh", "Kapil", "Vikas", "Amit" };

            string[] kolkataResidents = { "Kapil", "Manmohan", "Deepak", "Amit" };

​

            var allResidents = delhiResidents.Union(kolkataResidents);

​

            foreach (var item in allResidents)

            {

                Console.WriteLine(item);

            }

        }

    }

}