WebNov 1, 2024 · The binary search iterator must return the values of the binary search tree from smallest to largest. It must use O (h) memory, where h is the height of the tree. Both … Web173. 二叉搜索树迭代器 - 实现一个二叉搜索树迭代器类BSTIterator ，表示一个按中序遍历二叉搜索树（BST）的迭代器： * BSTIterator(TreeNode root) 初始化 BSTIterator 类的一个对象。BST 的根节点 root 会作为构造函数的一部分给出。指针应初始化为一个不存在于 BST 中的数字，且该数字小于 BST 中的任何元素。

173. 二叉搜索树迭代器 - 力扣（Leetcode）

WebFeb 8, 2024 · Leetcode Problem #284 ( Medium ): Peeking Iterator Description: Given an Iterator class interface with methods: next () and hasNext (), design and implement a PeekingIterator that support the peek () operation -- it essentially peek () at the element that will be returned by the next call to next (). Examples: Idea: WebLeetCode Solutions. Introduction ... 173 Binary Search Tree Iterator 179 Largest Number 187 Repeated DNA Sequences 188 Best Time to Buy and Sell Stock IV ... Given a binary tree, return all root-to-leaf paths. For example, given the following binary tree: great rock golf ny

Binary Tree Inorder Traversal - LeetCode 94 - YouTube

WebAssume that the iterator is initialized to the beginning of the list: [1, 2, 3]. Call next () gets you 1, the first element in the list. Now you call peek () and it returns 2, the next element. Calling next () after that still return 2. You call next () the final time and it returns 3, the last element. Calling hasNext () after that should ... Web173 Binary Search Tree Iterator – Medium · LeetCode solutions LeetCode solutions Introduction Solutions 1 - 50 1Two Sum – Medium 2 Add Two Numbers – Medium 3 Longest Substring Without Repeating Characters WebBinary Search Tree Iterator (Leetcode #173) Prakash Vaka 509 subscribers Subscribe 46 Share 2.6K views 2 years ago Binary Search Tree Iterator (Leetcode #173 ), BST Iterator... great rock guitarists