Merging two arrays without any duplicates [VB.NET] - vb.net

Question

The question being asked is as follows:
Implement the UniqueNames method. When passed two arrays of names, it will return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.
For example, calling MergeNames.UniqueNames({'Ava', 'Emma', 'Olivia'}, {'Olivia', 'Sophia', 'Emma'}) should return an array containing Ava, Emma, Olivia, and Sophia in any order.
Starting Code:
Module Module1
Public Class MergeNames
Public Shared Function UniqueNames(names1() As String, names2() As String) As String()
Throw New NotImplementedException()
End Function
End Class
Public Sub Main()
Dim names1() As String = {"Ava", "Emma", "Olivia"}
Dim names2() As String = {"Olivia", "Sophia", "Emma"}
Console.WriteLine(string.Join(", ", MergeNames.UniqueNames(names1, names2))) ' should print Ava, Emma, Olivia, Sophia
End Sub
End Module

Answer 1

LINQ would be the easiest way to go here:
Dim combinedUniqueNames = names1.Union(names2).Distinct().ToArray()
Union will combine two lists, Distinct will remove duplicates and ToArray creates a new array from the result. As is pretty much always the case with LINQ extension methods, they can all be called on any IEnumerable(Of T). Your String arrays implement IEnumerable(Of String).
EDIT:
As per Jimi's comment, we just need:
Dim combinedUniqueNames = names1.Union(names2).ToArray()
I guess I should have realised, given that 'union' is a set operation and does exclude duplicates in a mathematical context.

Answer 2

import java.util.ArrayList;
import java.util.List;
public class MergeNames {
public static String[] uniqueNames(String[] names1, String[] names2) {
List<String> list= new ArrayList<String>();
for (String name: names1) {
if(!list.contains(name)) {
list.add(name);
}
}
for (String name: names2) {
if(!list.contains(name)) {
list.add(name);
}
}
String[] a= list.toArray(new String[list.size()]);
return a;
}
public static void main(String[] args) {
String[] names1 = new String[] {"Ava", "Emma", "Emma","Olivia"};
String[] names2 = new String[] {"Olivia", "Sophia", "Emma"};
System.out.println(String.join(", ", MergeNames.uniqueNames(names1, names2))); // should print Ava, Emma, Olivia, Sophia
}
}