Description:Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.Calling next() will r
=null){nodeStack.Push(node);node=node.left;}}publicBSTIterator(TreeNode root){nodeStack=newStack<TreeNode>();PushLeft(root);}/** @return whether we have a next smallest number */publicboolHasNext(){returnnodeStack.Count>0?true:false;}/** @return the next smallest number...
Can you solve this real interview question? Binary Search Tree Iterator - Implement the BSTIterator class that represents an iterator over the in-order traversal [https://en.wikipedia.org/wiki/Tree_traversal#In-order_(LNR)] of a binary search tree (BST):
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Callingnext()will return the next smallest number in the BST Note:next()andhasNext()should run in average O(1) time and uses O(h) memory, wherehis the height of the...
Left } } /** * Your BSTIterator object will be instantiated and called as such: * obj := Constructor(root); * param_1 := obj.Next(); * param_2 := obj.HasNext(); */ 题目链接: Binary Search Tree Iterator : leetcode.com/problems/b 二叉搜索树迭代器: leetcode-cn.com/problem ...
LCR 055. 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
BSTIterator(TreeNode root)Initializes an object of theBSTIteratorclass. Therootof the BST is given as part of the constructor. The pointer should be initialized to a non-existent number smaller than any element in the BST. boolean hasNext()Returnstrueif there exists a number in the traversal...
next() and hasNext() should run in average O(1) time and uses O(h) memory, where h is the height of the tree.
来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/binary-search-tree-iterator 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 2. 二叉树中序遍历 搜索树中序是非降的 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ...
链接:https://leetcode-cn.com/problems/binary-search-tree-iterator/ 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 解法一:中序遍历 首先,在BSTIterator内声明一个List为values用来存二叉树的节点值,在构造方法内通过中序遍历的方式将节点值初始化到values中。 然后,声明一个index标识当...