Given a pre-order traversal of a Binary Search Tree(BST), write an algorithm to construct the BST from given preorder traversal. Examples Input preOrder[] = {7, 5, 3, 6, 9} Output Inorder : 3 5 6 7 9 Input preOrder[] = {12, 6, 1, 35, 20} Output Inorder : 1 6 …
In this problem we have given a Binary Search Tree, write an algorithm to convert best to a tree with sum of all smaller keys. Example Input Output Pre-order : 19 7 1 54 34 88 Naive Approach Traverse all the nodes one by one in any traversal form, and …
In reverse a path in BST using queue problem we have given a Binary Search Tree and node, write an algorithm to reverse the path from root to the given node. Assume that the node exists in the BST. Example Input Target Node = 12 Output In-order traversal before the …
Given a binary tree and a specific node or key. Print ancestors of a given binary tree node without recursion. Example Input : key = 7 Output : 3 1 Input : key = 4 Output : 2 1 Algorithm for Ancestors of a Given Binary Tree Node Create a class Node …
Given the root of a binary search tree and two nodes n1 and n2, find the LCA(Lowest Common Ancestor) of the nodes in a given binary search tree. Example Naive Approach for Lowest Common Ancestor in Binary Search Tree Find the LCA(n1, n2) using the optimal approach to find LCA …
In this problem, we have given a pointer denoting the root of the binary tree and your task is to print the binary tree in the vertical order. Example Input 1 / \ 2 3 / \ / \ 4 5 6 7 \ \ 8 9 Output 4 2 …
Given a binary tree, print the zigzag level order traversal of its node values. (ie, from left to right, then right to left for the next level and alternate between). Example consider the binary tree given below Below is the zigzag level order traversal of the above binary tree Types …
The top view of a binary tree is the set of nodes visible when the tree is viewed from the top. Given a binary tree, the Output top view of the binary tree from the left-most horizontal level to the rightmost horizontal level. Example Example 1 Example 2 Types of …
First, we need to know about what is Traversal in Binary Tree. Traversal is a type of method in which we visit all the nodes exactly once in some specific manner/order. Basically there are two types of traversal in Binary Tree: Breadth-First Traversal Depth First Traversal We already know about …