static void Main(string[] args)
{
string[] items;
while (true)
{
var inputs = Console.ReadLine().Split(' ');
if (inputs[0] == "Create")
{
items = inputs.Skip(1).ToArray();
break;
}
else
{
Console.WriteLine("You must first provide a Create command with the list of items.");
}
}
var list = new List <string>(items);
var iterator = new ListyIterator <string>(list);
while (true)
{
string command = Console.ReadLine();
if (command == "END")
{
break;
}
if (string.IsNullOrWhiteSpace(command))
{
continue;
}
try
{
switch (command)
{
case "Create":
throw new InvalidOperationException("There can only be one Create command.");
case "Move":
{
Console.WriteLine(iterator.Move());
break;
}
case "Print":
{
iterator.Print();
break;
}
case "HasNext":
{
Console.WriteLine(iterator.HasNext());
break;
}
case "Reset":
{
iterator.Reset();
break;
}
case "PrintAll":
{
var strBuilder = new StringBuilder();
foreach (var item in iterator)
{
strBuilder.Append($"{item} ");
}
Console.WriteLine(strBuilder.ToString().TrimEnd());
break;
}
default:
throw new InvalidOperationException("Invalid command.");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
Console.ReadKey();
}
