python剑指offer 实现树的子结构
2021-06-23 05:04
标签：实现 highlight utf-8 roo val one pytho 输入 tom python剑指offer 实现树的子结构 标签：实现 highlight utf-8 roo val one pytho 输入 tom 原文地址：https://www.cnblogs.com/tianqizhi/p/9674680.html题目描述
# -*- coding:utf-8 -*-
# class TreeNode:
# def __init__(self, x):
# self.val = x
# self.left = None
# self.right = None
class Solution:
def HasSubtree(self, pRoot1, pRoot2):
# write code here
if not pRoot1 or not pRoot2:
return False
if pRoot1.val == pRoot2.val:
return self.DoesTree1HaveTrees(pRoot1,pRoot2)
return self.HasSubtree(pRoot1.left, pRoot2) or self.HasSubtree(pRoot1.right, pRoot2)
def DoesTree1HaveTrees(self,pRoot1,pRoot2):
if not pRoot2:
return True
if not pRoot1 or pRoot1.val == pRoot1.val:
return False
return self.DoesTree1HaveTrees(pRoot1.left,pRoot2.left) and self.DoesTree1HaveTrees(pRoot1.right,pRoot2.right)