原题链接在这里:https://leetcode.com/problems/maximum-sum-bst-in-binary-tree/description/ 题目: Given a binary treeroot, returnthe maximum sum of all keys of any sub-tree which is also a Binary Search Tree (BST). Assume a BST is defined as follows: The left subtree of a node contains...
Can you solve this real interview question? Maximum Sum BST in Binary Tree - Given a binary tree root, return the maximum sum of all keys of any sub-tree which is also a Binary Search Tree (BST). Assume a BST is defined as follows: * The left subtree
(BST, 二叉树,递归) lintcode 628. Maximum Subtree,650. 651. 649. 448. leetcode 687. longest Univalue Path, 112. Path Sum I II III /** * Definition of TreeNode: * class TreeNode { * public: * int val; * TreeNode *left, *right; * TreeNode(int val) { * this->val = val;...
0450-delete-node-in-a-bst.cpp 0456-132-pattern.cpp 0463-island-perimeter.cpp 0473-matchsticks-to-square.cpp 0474-ones-and-zeroes.cpp 0494-target-sum.cpp 0496-next-greater-element-i.cpp 0509-fibonacci-number.cpp 0515-find-the-largest-value-in-each-tree-row.cpp 0518-coin-change-ii.cpp 052...
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LeetCode-Maximum Binary Tree Description: Given an integer array with no duplicates. A maximum tree building on this array is defined as follow: The root is the maximum number in the array. The left subtree is the maximum tree constructed from left part subarray divided by the maximum number...
https://leetcode.com/problems/sliding-window-maximum/ Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position....
【Leetcode_easy】643. Maximum Average Subarray I problem 643. Maximum Average Subarray I 题意:一定长度的子数组的最大平均值。 solution1:计算子数组之后的常用方法是建立累加数组,然后再计算任意一定长度的子数组之和,迭代更新得到最大值。
http://www.programcreek.com/2013/02/leetcode-binary-tree-maximum-path-sum-java/ 另外,这道题目的BST条件,似乎没什么用。因为如果全是负数,BST也没帮助了。 ** 总结: pre-order -> top-down post-order -> bottom-up in-order -> ? level-order -> bfs ...
跟[leetcode]543. Diameter of Binary Tree二叉树直径的思路基本一致。 代码 1classSolution {2publicintmaxPathSum(TreeNode root) {3//corner case4if(root ==null){return0;}5/*要么用个global variable放在class下,要么用长度为1的一维数组来存。6maxSum的value,可正可负,初始化为Integer.MIN_VALUE。7...