using System;

​

using System.Linq;

​

namespace UniqueElementsOfArray

{

    public class Program

    {

        public static string[] uniqueItems (string[] anotherArray)

        {

            string[] uniqueArray;

​

            if (anotherArray.Length > 1)

            {

                uniqueArray = anotherArray.Cast<string>().Distinct().ToArray();

            }

            else

            {

                uniqueArray = anotherArray.Cast<string>().ToArray();

            }

            return uniqueArray;

        }

        public static void Main(string[] args)

        {

            string[] oneArray = {"Argentina", "Cuba", "Chile", "Argentina"};

​

            string[] theArray;

​

            theArray = uniqueItems(oneArray);

​

            for (int i = 0; i < theArray.Length; i++)

            {

                Console.WriteLine(theArray[i]);

            }

            Console.ReadLine();

        }

    }

}

​