public static void Test()
{
ListNode head = new ListNode(1);
head.Next = new ListNode(2);
head.Next.Next = new ListNode(3);
head.Next.Next.Next = new ListNode(4);
head.Next.Next.Next.Next = new ListNode(5);
head.Next.Next.Next.Next.Next = new ListNode(6);
head.Next.Next.Next.Next.Next.Next = head.Next.Next;
Print(LinkedListCycleStart.FindCycleStart(head));
head.Next.Next.Next.Next.Next.Next = head.Next.Next.Next;
Print(LinkedListCycleStart.FindCycleStart(head));
head.Next.Next.Next.Next.Next.Next = head;
Print(LinkedListCycleStart.FindCycleStart(head));
}
private static void Print(ListNode node)
{
Console.WriteLine($"LinkedList cycle start: {LinkedListCycleStart.FindCycleStart(node).Value}");
}