binary_tree_node.php

<?php
/**
 * 二叉树结点类
 * Class BinaryTreeNode
 */
class BinaryTreeNode
{
    /**
     * 结点值
     * @var int
     */
    public $data;
    /**
     * 左结点
     * @var BinaryTreeNode
     */
    public $left;
    /**
     * 右结点
     * @var BinaryTreeNode
     */
    public $right;
}