public void FindNthToLastElement_Int_Test()
{
var head = new AlgorithmsPractice.Lists.LinkedListNode <int>(1, 2, 3, 4, 5, 6, 7);
var nthToLast = LinkedListService.FindNthToLastElement <int>(head, 3);
Assert.AreEqual(5, nthToLast.Value);
}