Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not. You need to merge them into a new binary tree. The merge
Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not. You need to merge them into a new binary tree. The merge rule is that if two nodes overlap, then sum node values up as the ne...
《669. Trim a Binary Search Tree》的核心比较容易想:首先是一棵搜索树,其次在边界条件整棵子树都能砍掉;(其实,Merge的核心思路也类似,一时间没联想到) 5,树高完成后,该问题顺利AC,但凭经验肯定是山路十八弯。再回到最初的递归解法,因为有树高的热身,再次回到问题本身的时候,竟然思路顺利很多。但仍然在函数...
# Definition for a binary tree node. # class TreeNode: # def __init__(self, val=0, left=None, right=None): # self.val = val # self.left = left # self.right = right class Solution: def mergeTrees(self, root1: Optional[TreeNode], root2: Optional[TreeNode]) -> Optional[TreeN...
My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算
* Check leetcode 10319 changes: 19 additions & 0 deletions 19 数据结构基础/作业/HW5 Note.md Original file line numberDiff line numberDiff line change @@ -0,0 +1,19 @@ ### HW5 1.In a binary search tree, the keys on the same level from left to right must be in sorted (non...
617. Merge Two Binary Trees # 题目 # You are given two binary trees root1 and root2. Imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not. You need to merge the two trees into a n
617. Merge Two Binary Trees —Easy https://leetcode.com/problems/merge-two-binary-trees/ Code: 思路: 1.一开始没想明白到底是递归好还是迭代好,然后就没想明白,感觉下来还是递归好写但是递归的逻辑不易想明白 2.easy还是easy的一开始觉得迭代太麻烦,然后递归没想没明白如何让两个树一起递归,实际上感觉这...
按照题意做即可。 代码# Go packageleetcode/** * Definition for singly-linked list. * type ListNode struct { * Val int * Next *ListNode * } */funcmergeTwoLists(l1*ListNode,l2*ListNode)*ListNode{ifl1==nil{returnl2}ifl2==nil{returnl1}ifl1.Val<l2.Val{l1.Next=mergeTwoLists(l1.Next,l2...
Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not. You need to merge them into a new binary tree. The merge rule is that if two nodes overlap, then sum node values up as the ne...