/*

Implement the UniqueNames method. When two arrays of names have passed, it will return an array containing the names that appear in either of arrays, but not in both. The returned array should have no duplicates.  

For example, calling: 

    MergeNames.UniqueNames( 

        new string[]{'Ava', 'Emma', 'Olivia'},  

        new string[]{'Olivia', 'Sophia', 'Emma'} 

    )  

should return an array containing Ava, and Sophia in any order. 

*/

using System;

​

public class MergeNames

{

    public static string[] UniqueNames(string[] names1, string[] names2)

    {

        throw new NotImplementedException();

    }

​

    public static void Main(string[] args)

    {

        string[] names1 = new string[]{"Ava", "Emma", "Olivia"};

        string[] names2 = new string[]{"Olivia", "Sophia", "Emma"};

        Console.WriteLine(string.Join(", ", MergeNames.UniqueNames(names1, names2)));

    }

}