public static void Main(string[] args)
{
string menuSelection = "", newNode = "", existingNode = "";
LinkedList ll = new LinkedList(new Node("zzz"));
do
{
newNode = "";
PrintMainMenu();
menuSelection = Console.ReadLine();
Console.Clear();
switch (menuSelection)
{
case "1":
Console.WriteLine("What value you like the new Node to contain?");
newNode = Console.ReadLine();
if (newNode != "")
{
ll.AddNode(new Node(newNode));
}
else
{
Console.Clear();
Console.WriteLine("Sorry, you must input a value for the Node. Please try again.");
}
Console.Write("\nPress any key to return to main menu...");
Console.ReadKey();
Console.Clear();
break;
case "2":
Console.WriteLine("What value you like the new Node to contain?");
newNode = Console.ReadLine();
Console.Clear();
Console.WriteLine("What is the value of the existing Node to insert the new Node before?");
existingNode = Console.ReadLine();
if (newNode != "" && existingNode != "")
{
ll.AddBefore(new Node(newNode), new Node(existingNode));
}
else
{
Console.Clear();
Console.WriteLine("Sorry, you must input a value for both Nodes. Please try again.");
}
Console.Write("\nPress any key to return to main menu...");
Console.ReadKey();
Console.Clear();
break;
case "3":
Console.WriteLine("What value you like the new Node to contain?");
newNode = Console.ReadLine();
Console.Clear();
Console.WriteLine("What is the value of the existing Node to insert the new Node after?");
existingNode = Console.ReadLine();
if (newNode != "" && existingNode != "")
{
ll.AddAfter(new Node(newNode), new Node(existingNode));
}
else
{
Console.Clear();
Console.WriteLine("Sorry, you must input a value for both Nodes. Please try again.");
}
Console.Write("\nPress any key to return to main menu...");
Console.ReadKey();
Console.Clear();
break;
case "4":
Console.WriteLine("What value you like the new Node to contain?");
newNode = Console.ReadLine();
if (newNode != "")
{
ll.AddLast(new Node(newNode));
}
else
{
Console.Clear();
Console.WriteLine("Sorry, you must input a value for the Node. Please try again.");
}
Console.Write("\nPress any key to return to main menu...");
Console.ReadKey();
Console.Clear();
break;
case "5":
Console.WriteLine("What is the value of the Node you would like to find?");
existingNode = Console.ReadLine();
if (existingNode != "")
{
Node checkNode = ll.Find(existingNode);
if (checkNode != null)
{
Console.WriteLine("\nFound!");
}
else
{
Console.WriteLine("\nThat Node doesn't exist.");
}
}
else
{
Console.Clear();
Console.WriteLine("Sorry, you must input a value for the Node. Please try again.");
}
Console.Write("\nPress any key to return to main menu...");
Console.ReadKey();
Console.Clear();
break;
case "6":
ll.PrintNodes();
Console.Write("\nPress any key to return to main menu...");
Console.ReadKey();
Console.Clear();
break;
case "7":
Environment.Exit(0);
break;
default:
Console.WriteLine("That did not match one of the menu options. Try again.\n");
break;
}
} while (menuSelection != "7");
}