# class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None # # # @param root TreeNode类 # @return int整型 # class Solution: def run(self , root ): # write code here if root == None: return 0 def min_num(a,b): if a>b: return b return a #第一版直接递归方法 # def min_depth(...