建立二叉树和线索二叉树分别用以下方法建立二叉树并用图型显示出来： 用先序遍历的输入序列 　　用层次遍历的输入序列 　　用先序和中序遍历的结果 最后对所建立的二叉树进行中序线索化，并对此线索树进行中序遍历-Build binary tree and threaded binary following methods were used to establish a binary tree with graphics display: The first traversal of