LeetCode 109. Convert Sorted List to Binary Search Tree Description Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subt...
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TreeNode * parent = temp.front(); temp.pop(); if(len>0){t =newTreeNode(0);parent->left = t;temp.push(t);len--;} elsebreak; if(len>0){t =newTreeNode(0);parent->right = t;temp.push(t);len--;} elsebreak; } vector<TreeNode *>treev; treev.push_back(THead); TreeNode...
The number of nodes in the tree is in the range[0, 104]. -104<= Node.val <= 104 All the values in the tree areunique. rootis guaranteed to be a valid binary search tree. Note:This question is the same as 1038:https://leetcode.com/problems/binary-search-tree-to-greater-sum-tree...
https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/ 题目: Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 思路: 简单起见,先把链表值存到数组中,用数组递归感觉会简单点。。
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 this: ...
108. 将有序数组转换为二叉搜索树 - 给你一个整数数组 nums ,其中元素已经按 升序 排列,请你将其转换为一棵 平衡 二叉搜索树。 示例 1: [https://assets.leetcode.com/uploads/2021/02/18/btree1.jpg] 输入:nums = [-10,-3,0,5,9] 输出:[0,-3,9,-10,null,5] 解
总结: sorted array -> balanced bst ** Anyway, Good luck, Richardo! My code: /** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } ...
public: TreeNode *sortedArrayToBST(vector<int> &num) { return create(num,0,num.size()-1); } TreeNode* create(vector<int>num,int L,int R) { if(L>R)return NULL; int mid=(R+L+1)/2; //BST树总是从左到右排满的,如果不优先选右边的这个,{1,3}结果为{1,#,3},而实际结果应为...
538. Convert BST to Greater Tree 问题描述:将一个BST树节点加上该BST树中所有节点比它大的值。 思路:后序遍历。 原答案:...538. 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...