WebJan 23, 2024 · Given binary tree is a Heap Time Complexity: O (N), where N is the number of nodes Auxiliary Space: O (logN), for recursive stack space. Check if tree is MAX HEAP using complete Binary tree property with SPACE COMPLEXITY O (1) Set the initial result to true as if it does not child than it is a heap WebJan 1, 2013 · 1 Answer. There is no algorithm for building a BST from a heap in O (n) time. The reason for this is that given n elements, you can build a heap from them in O (n) time. If you have a BST for a set of values, you can sort them in O (n) time by doing an inorder traversal. If you could build a BST from a heap in O (n) time, you could then have an ...
Convert BST to Greater Tree - LeetCode
WebMar 28, 2024 · By traversing the right subtree, we reach the largest element, and if it has a left subtree, the second largest element will be stored in the rightmost node of that subtree. The function starts by initializing two pointers, current and parent, to the root node of the BST and nullptr, respectively. The algorithm then enters a while loop, where ... WebKth Largest Element in an Array - Given an integer array nums and an integer k, return the kth largest element in the array. Note that it is the kth largest element in the sorted order, not the kth distinct element. You must solve it in O(n) time complexity. Input: nums = [3,2,1,5,6,4], k = 2 Output: 5 Example 2: fps app free
[Java/Python] MaxHeap & BST & Decreasing Deque Solutions
WebGiven the root of a binary tree, determine if it is a complete binary tree.. In a complete binary tree, every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible.It can have between 1 and 2 h nodes inclusive at the last level h.. Example 1: Input: root = [1,2,3,4,5,6] Output: true Explanation: Every level before the last … WebApr 30, 2024 · 60 LeetCode problems to solve for coding interview. I recently received a job offer from one of FAANG. Here are some problems to help me pass the coding interview. Categories are. If you can solve ... Web4.7K. 163. Companies. You are given the root of a binary search tree (BST) and an integer val. Find the node in the BST that the node's value equals val and return the subtree rooted with that node. If such a node does not exist, return null. Example 1: Input: root = [4,2,7,1,3], val = 2 Output: [2,1,3] Example 2: fps anzeige xbox game bar