public void TestFindBeginOfLoop()
{
/*
1-2-5-9
/ 8
11-12-15-18- 6
\ 7
26-29-30
*/
var ll = new LinkedList<int>
(11);
ll.Insert(new Node<int>(12));
ll.Insert(new Node<int>(15));
ll.Insert(new Node<int>(18));
ll.Insert(new Node<int>(1));
ll.Insert(new Node<int>(2));
ll.Insert(new Node<int>(5));
ll.Insert(new Node<int>(9));
ll.Insert(new Node<int>(8));
ll.Insert(new Node<int>(7));
ll.Insert(new Node<int>(30));
ll.Insert(new Node<int>(29));
ll.Insert(new Node<int>(26));
var node = ll.FindAt(3);
ll.Last.Next = node;
var found = ll.FindBeginingOfLoop(ll.First);
Assert.IsTrue(found.Data == 18);
}