关于迭代器和泛型的有关问题，小弟我也不知道咋回事求大神帮忙看下
关于迭代器和泛型的问题，我也不知道怎么回事求大神帮忙看下。
public class Node<T>
{
private T data;
public T Data
{
get { return data; }
set { data = value; }
}
private Node<T> lChild;//左孩子
public Node<T> LChild
{
get { return lChild; }
set { lChild = value; }
}
private Node<T> rChild;//右孩子
public Node<T> RChild
{
get { return rChild; }
set { rChild = value; }
}
public Node(T val, Node<T> lp, Node<T> rp)
{
data = val;
lChild = lp;
rChild = rp;
}
public Node(Node<T> lp, Node<T> rp)
{
lChild = lp;
rChild = rp;
data = default(T);
}
public Node(T val)
{
data = val;
lChild = null;
rChild = null;
}
public Node()
{
data = default(T);
lChild = null;
rChild = null;
}
}
public class LinkBiTree<T> : IEnumerable<T>
{
private Node<T> head;//头引用
public Node<T> Head
{
get { return head; }
set { head = value; }
}
public IEnumerator<T> preOrderTraverese(Node<T> node)
{
if (node == null)
yield break;
yield return node.Data;
yield return preOrderTraverese(node.LChild);
yield return preOrderTraverese(node.RChild);
}
public IEnumerator<T> GetEnumerator()
{
yield return preOrderTraverese(head);
}
public LinkBiTree()
{
head = null;
}