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
https://leetcode.com/problems/maximum-binary-tree/discuss/106146/C%2B%2B-O(N)-solution https://leetcode.com/problems/maximum-binary-tree/discuss/106194/javac-simple-recursive-method https://leetcode.com/problems/maximum-binary-tree/discuss/106147/C%2B%2B-8-lines-O(n-log-n)-map-plus-stac...
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. The right subtree is the maximum tree ...
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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 ...
21classSolution{public:intmaxPathSum(TreeNode* root){intres = INT_MIN;maxDown(root, res);returnres; }intmaxDown(TreeNode* node,int& res){if(!node) {return0; }intleft =max(0,maxDown(node->left, res));// prune negative branchintright =max(0,maxDown(node->right, res)); ...
(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;...
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