总结:对二叉树应用分治法时,应避免定义多个递归函数,当出现需要递归求解多种的结果时,尽量使用ResultType来让一次递归返回多种结果. 题目:Binary Tree Maximum Path Sum 给出一棵二叉树,寻找一条路径使其路径和最大,路径可以在任一节点中开始和结束(路径和为两个节点之间所在路径上的节点权值之和). 解法:定义两个函数,maxPathSum(TreeNode root)表示以root为根的树的最大路径长度(即题目所求,至少包含一个节点),rootToAny(TreeN…
题目: http://poj.org/problem?id=3714 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=27048#problem/D Raid Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 7355 Accepted: 2185 Description After successive failures in the battles aga…
python编写PAT甲级 1007 Maximum Subsequence Sum wenzongxiao1996 2019.4.3 题目 Given a sequence of K integers { N1, N2, ..., NK}. A continuous subsequence is defined to be { Ni, Ni+1, ..., Nj} where 1≤i≤j≤K. The Maximum Subsequence is the continuous sub…