Leetcode 572：另一个树的子树 题目描述 给定两个非空二叉树 s 和 t，检验 s 中是否包含和 t 具有相同结构和节点值的子树。s 的一个子树包括 s 的一个节点和这个节点的所有子孙。s 也可以看做它自身的一棵子树。 示例 解题…
标签：算法
[leetcode]题目解析（190524）
valid sudoku 题目描述 Determine if a Sudoku is valid, according to: Sudoku Puzzles – The Rules.The Sudoku board could …
[Leetcode]merge sorted array
merge sorted array 题目描述 Given two sorted integer arrays A and B, merge B into A as one sorted array.Note: You may assum…
[leetcode]populating next right pointers in each node
题目描述 题目描述 Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } Popul…
[Leetcode]copy list with random pointer
题目描述 A linked list is given such that each node contains an additional random pointer which could point to any node in t…