https://www.cnblogs.com/grandyang/p/6591526.html 这个题本质上是中序遍历的反向.中序遍历是从小到大,而这个题目是从大到小,然后每个数加上比自己大的所有数的和. 因为实际上并没有改变树的结构,只是改变了原来树中节点的值,所以用void做返回值就可以了. 每次加sum实际上就是加的所有比当前节点大的数的和,并且这个和一定等于前一个节点的更新值. class Solution { public: TreeNode* convertBST(TreeNode…

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…

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

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…

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…

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…

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…

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…

题目要求 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. 题目分析及思路 题目给出一棵二叉搜索树,要求将它转成Greater Tree.定义Greater Tre…

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 Given a binary search Tree ｀{5,2,3}｀: 5 / \ 2 13…