public StudentTree(int count)
{
this.count = count;
this.Root = CreateNode(ref count);
}
//后序遍历
public void PostOrder(StudentNode node)
{
if (node == null) return;
PostOrder(node.LeftChild);
PostOrder(node.RightChild);
Console.Write(node.Student.Name + "\t");
}
//创建结点及其子结点
StudentNode CreateNode(ref int index)
{
if (R.Next(count) > index) return null;
if (--index == 0) return null;
StudentNode node = new StudentNode(new Student(20120000 + index));
node.LeftChild = CreateNode(ref index); //创建左孩子结点
node.RightChild = CreateNode(ref index); //创建右孩子结点
return node;
}