应用题-二叉树专题-最大二叉树
**线性求最大值** ```python # Definition for a binary tree node. # class TreeNode: # def __init__(self, val=0, left=None, right=None): # sel
**线性求最大值** ```python # Definition for a binary tree node. # class TreeNode: # def __init__(self, val=0, left=None, right=None): # sel