This is a simple binary tree class that I wrote while writing a PDA program.

这是一个简单的二进制树类，我在写一写掌上电脑程序。

youdao

This is a simple binary tree class that I wrote while writing a PDA program.

这是一个简单的二进制树类，我在写一写掌上电脑程序。

youdao