binary search tree
![[Algorithm] Delete a node from Binary Search Tree](/scriptcss/images/74.png)
[Algorithm] Delete a node from Binary Search Tree
The solution for the problem can be divided into three cases: case 1: if the delete node is leaf node, then we can simply remove it case 2: if the delete node is has single side or substree ca
日期 2023-06-12 10:48:40![[Algorithm] Delete a node from Binary Search Tree](/scriptcss/images/71.png)
[Algorithm] Delete a node from Binary Search Tree
The solution for the problem can be divided into three cases: case 1: if the delete node is leaf node, then we can simply remove it case 2: if the delete node is has single side or substree ca
日期 2023-06-12 10:48:40
Unique Binary Search Trees II -- LeetCode
原题链接: http://oj.leetcode.com/problems/unique-binary-search-trees-ii/ 这道题是求解全部可行的二叉查找树，从Unique Binary Search Trees中我们已经知道，可行的二叉查找树的数量是对应的卡特兰数，不是一个多项式时间的数量级，所以我们要求解全部的树，自然是不能多项式时间内完毕的了。算法
日期 2023-06-12 10:48:40![[LeetCode] 108. Convert Sorted Array to Binary Search Tree ☆(升序数组转换成一个平衡二叉树)](/scriptcss/images/75.png)
[LeetCode] 108. Convert Sorted Array to Binary Search Tree ☆(升序数组转换成一个平衡二叉树)
108. Convert Sorted Array to Binary Search Tree 描述 Given an array where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tree is
日期 2023-06-12 10:48:40Pat(Advanced Level)Practice--1043(Is It a Binary Search Tree)
Pat1043代码 题目描写叙述： A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes with keys less than the
日期 2023-06-12 10:48:40PAT 1043 Is It a Binary Search Tree[二叉树][难]
1043 Is It a Binary Search Tree（25 分） A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nod
日期 2023-06-12 10:48:40leetcode 235. Lowest Common Ancestor of a Binary Search Tree
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined betwee
日期 2023-06-12 10:48:40leetcode 669. Trim a Binary Search Tree
Given a binary search tree and the lowest and highest boundaries as L and R, trim the tree so that all its elements lies in [L, R] (R >= L). You might need to change the root of the tree, so the
日期 2023-06-12 10:48:40
Lintcode: Remove Node in Binary Search Tree
iven a root of Binary Search Tree with unique value for each node. Remove the node with given value. If there is no such a node with given value in the binary search tree, do nothing. You should ke
日期 2023-06-12 10:48:40
Leetcode: Closest Binary Search Tree Value II
Given a non-empty binary search tree and a target value, find k values in the BST that are closest to the target. Note: Given target value is a floating point. You may assume k is always valid, tha
日期 2023-06-12 10:48:40Leetcode: Verify Preorder Sequence in Binary Search Tree
Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number in the sequence is unique. Follow up: Could you do it us
日期 2023-06-12 10:48:40Lintcode: Insert Node in a Binary Search Tree
Given a binary search tree and a new tree node, insert the node into the tree. You should keep the tree still be a valid binary search tree. Example Given binary search tree as follow: 2
日期 2023-06-12 10:48:40Lintcode: Search Range in Binary Search Tree
Given two values k1 and k2 (where k1 < k2) and a root pointer to a Binary Search Tree. Find all the keys of tree in range k1 to k2. i.e. print all x such that k1<=x<=k2 and x is a key of gi
日期 2023-06-12 10:48:40Leetcode: Binary Search Tree Iterator
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note: next() a
日期 2023-06-12 10:48:40leetcode第一刷_Convert Sorted Array to Binary Search Tree
晕。竟然另一样的一道题。换成sorted array的话。找到中间位置更加方便了。 TreeNode *sortTree(vector<int> &num, int start, int len){ if(len <= 0) return NULL; int middle = len/2; TreeNode *root = new Tr
日期 2023-06-12 10:48:401064 Complete Binary Search Tree (30 分)【难度: 一般 / 知识点: 完全二叉搜索树】
https://pintia.cn/problem-sets/994805342720868352/problems/994805407749357568 二叉搜索数的中序遍历是有序的。故先将权值排序。 然后中序建树。因为
日期 2023-06-12 10:48:40[LeetCode] Convert Sorted Array to Binary Search Tree
Given an array where elements are sorted in ascending order, convert it to a height balanced BST. Hide Tags Tree Depth-first Search 方法一：递归，也是dfs /**
日期 2023-06-12 10:48:40[LeetCode] Unique Binary Search Trees
Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example,Given n = 3, there are a total of 5 unique BST's. 1 3
日期 2023-06-12 10:48:40【LeetCode】173. Binary Search Tree Iterator (2 solutions)
Binary Search Tree Iterator Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smalles
日期 2023-06-12 10:48:40LeetCode:Unique Binary Search Trees
问题描写叙述： Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example, Given n = 3, there are a total of 5 unique BST's. 1
日期 2023-06-12 10:48:40[LeetCode] Trim a Binary Search Tree 修剪一棵二叉搜索树
Given a binary search tree and the lowest and highest boundaries as L and R, trim the tree so that all its elements lies in [L, R] (R >= L). You might need to chang
日期 2023-06-12 10:48:40[LeetCode] 96. Unique Binary Search Trees 独一无二的二叉搜索树
Given n, how many structurally unique BST's (binary search trees) that store values 1 ... n? Example: Input: 3 Output: 5 Explanation: Given n = 3, there are a total of 5 un
日期 2023-06-12 10:48:40[LeetCode] 99. Recover Binary Search Tree 复原二叉搜索树
Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its structure. Example 1: Input: [1,3,null,null,2] 1 / 3 \ &nb
日期 2023-06-12 10:48:40[LeetCode] Convert Sorted List to Binary Search Tree 将有序链表转为二叉搜索树
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 whi
日期 2023-06-12 10:48:40[LeetCode] Convert Sorted Array to Binary Search Tree 将有序数组转为二叉搜索树
Given an array 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
日期 2023-06-12 10:48:401043 Is It a Binary Search Tree
A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes with keys less than the node's key. The right su
日期 2023-06-12 10:48:4096. Unique Binary Search Trees
Given n, how many structurally unique BST's (binary search trees) that store values 1 ... n? Example: Input: 3 Output: 5 Explanation: Given n = 3, there are a total of 5 unique BS
日期 2023-06-12 10:48:40Convert Sorted Array to Binary Search Tree
Given an array 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
日期 2023-06-12 10:48:40Insert into a Binary Search Tree
Given the root node of a binary search tree (BST) and a value to be inserted into the tree, insert the value into the BST. Return the root node of the BST after the insertion. It is guaranteed t
日期 2023-06-12 10:48:40leetcode 669. Trim a Binary Search Tree 修剪二叉搜索树 (简单)
一、题目大意 给你二叉搜索树的根节点 root ，同时给定最小边界low 和最大边界 high。通过修剪二叉搜索树，使得所有节点的值在[low, high]中。修剪树 不应该 改变保留在树中的元
日期 2023-06-12 10:48:40