1.3.19 #
解答 #
建立一个结点引用 Cur，让它移动到尾结点的前一个结点，让那个结点的 next 变为 null。
代码 #
var first = new Node<string> { Item = "first" };
var second = new Node<string> { Item = "second" };
var third = new Node<string> { Item = "third" };
first.Next = second;
second.Next = third;
third.Next = null;
var current = first;
while (current != null)
{
Console.Write(current.Item + " ");
current = current.Next;
}
DeleteLast(first);
Console.WriteLine();
current = first;
while (current != null)
{
Console.Write(current.Item + " ");
current = current.Next;
}
Console.WriteLine();
static void DeleteLast(Node<string> first)
{
var current = first;
while (current.Next.Next != null)
{
current = current.Next;
}
current.Next = null;
}