public int val {get;set;}
public Node next {get;set;}
private static Node head = null, tail = null;
private static void Add(int v)
var node = new Node(){ val = v };
private static bool Contains(Node h, int v)
public static void Main()
int[] toBeAdded = new int[] {1, 45, 60, 12};
foreach (var i in toBeAdded)
Console.WriteLine(node.val);
Console.WriteLine(Contains(head, 45));
Console.WriteLine(Contains(head, 44));
Console.WriteLine(Contains(head, 60));