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Transform a BST to greater sum tree

Given a BST, transform it into greater sum tree where each node contains sum of all nodes greater than that node. 自己想的复杂了,其实就是一个反向的inorder.新的值就是前面所有元素的求和.…

【leetcode】1038. Binary Search Tree to Greater Sum Tree

题目如下: Given the root of a binary search tree with distinct values, modify it so that every node has a new value equal to the sum of the values of the original tree that are greater than or equal to node.val. As a reminder, a binary search tree is a t…

LeetCode -- 1038. Binary Search Tree to Greater Sum Tree

/** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */ class Solution { public: int preroot = 0; TreeNode* bstToGst(TreeNode* root) {…

LN : leetcode 538 Convert BST to Greater Tree

lc 538 Convert BST to Greater Tree 538 Convert BST to Greater Tree Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all keys greater than the original ke…

【leetcode_easy】538. Convert BST to Greater Tree

problem 538. Convert BST to Greater Tree 参考 1. Leetcode_easy_538. Convert BST to Greater Tree; 完…

LeetCode 538. Convert BST to Greater Tree （把二叉搜索树转换成较大树）

Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all keys greater than the original key in BST. Example: Input: The root of a Binary Search Tree like thi…

538. Convert BST to Greater Tree

Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all keys greater than the original key in BST. Example: Input: The root of a Binary Search Tree like thi…

[LeetCode] Convert BST to Greater Tree 将二叉搜索树BST转为较大树

Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all keys greater than the original key in BST. Example: Input: The root of a Binary Search Tree like thi…

[Swift]LeetCode538. 把二叉搜索树转换为累加树 | Convert BST to Greater Tree

Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all keys greater than the original key in BST. Example: Input: The root of a Binary Search Tree like thi…

[Leetcode]538. Convert BST to Greater Tree

Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all keys greater than the original key in BST. Example: Input: The root of a Binary Search Tree like thi…