Given therootof 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 the sum of all keys greater than the original key in BST. As a reminder, abinary search treeis a tree that satisfies these constraints...
为了不改变原来的tree,先copy下: #Definition for a binary tree node.#class TreeNode(object):#def __init__(self, x):#self.val = x#self.left = None#self.right = NoneclassSolution(object):defconvertBST(self, root):""":type root: TreeNode :rtype: TreeNode"""use right->root->left ...
使用一个vector将所有节点的值以升序排列。然后比较,求和,加上。 3、代码 1TreeNode* convertBST(TreeNode*root) {2if(root ==NULL)3returnNULL;45vector<int>v;6inorder(root,v);7increaseVal(root, v);89returnroot;1011}1213voidincreaseVal(TreeNode *root, vector<int> &v)14{15if(root ==NULL)...
LeetCode-Convert BST to Greater Tree Description: 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 Sea...
今天介绍的是LeetCode算法题中Easy级别的第122题(顺位题号是538)。给定二进制搜索树(BST),将其转换为更大树,使原始BST的每个键都更改为原始键加上所有键的总和大于BST中的原始键。例如: 输入:二进制搜索树的根,如下所示: 5 / \ 2 13 1 2 3 输出:大树的根,如下所示: 18 / \ 20 13 1 2 3 本次...
Can you solve this real interview question? Convert Sorted List to Binary Search Tree - Given the head of a singly linked list where elements are sorted in ascending order, convert it to a height-balanced binary search tree. Example 1: [https://asse
LeetCode 109. Convert Sorted List to BST 简介:给定一个链表,其中元素按升序排序,将其转换为高度平衡的BST。对于这个问题,高度平衡的二叉树被定义为:二叉树中每个节点的两个子树的深度从不相差超过1。 Description Given a singly linked list where elements are sorted in ascending order, convert it to a ...
538. Convert BST to Greater Tree* https://leetcode.com/problems/convert-bst-to-greater-tree/ 题目描述 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 ...
利用好BST的特性,解起来并不难 1/**2* Definition for a binary tree node.3* public class TreeNode {4* int val;5* TreeNode left;6* TreeNode right;7* TreeNode(int x) { val = x; }8* }9*/10publicclassSolution {11privateintsum = 0;12publicTreeNode convertBST(TreeNode root) {13if...
LeetCode 538. Convert BST to Greater Tree(把BST每个节点的值都加上比它大的节点的值) 题意:把二叉查找树每个节点的值都加上比它大的节点的值。 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 /** * Definition for a binary tree node....