static void Main(string[] args)
{
Console.WriteLine("Trie workout!");
var trie = new Trie();
trie.Add("hello");
trie.Add("helloworld");
trie.Add("hell");
trie.Add("hilarious");
trie.Add("hilary");
trie.Add("hilbert");
trie.Print();
Console.WriteLine($"string hell exists in " + trie.LookUp("hell"));
Console.WriteLine($"string hello exists in " + trie.LookUp("hello"));
Console.WriteLine($"string hel exists in " + trie.LookUp("hel"));
var list = trie.AutoComplete("hi");
Console.WriteLine("AutoComplete for hi are " + string.Join(", ", list));
var list1 = trie.AutoComplete("he");
Console.WriteLine("AutoComplete for he are " + string.Join(", ", list1));
}