Construct BST from Preorder Traversal
Construction and Iterator Patterns DSA practice problem on Onlearn.
Difficulty: medium.
Topics: How can you construct a Binary Search Tree (BST) from its preorder traversal?, Binary Search Tree, Preorder Traversal, Tree Construction, Recursion, Time Complexity, Space Complexity, stack, divide and conquer, tree construction, binary search tree, preorder traversal, recursion, Construct BST from Preorder.
Construct Binary Search Tree from Preorder Traversal Problem Statement Given an array of unique integers preorder representing the preorder traversal of a Binary Search Tree (BST), reconstruct the BST and return its root. Input A single array of integers preorder. Output The root node of the reconstructed BST. Constraints 1 <= preorder.length <= 10^4 10^9 <= preorder[i] <= 10^9 Example Input: Output: (The root of the BST, which would visually represent the following structure)