Preorder, Inorder, and Postorder in One Traversal
Learning Traversals DSA practice problem on Onlearn.
Difficulty: medium.
Topics: How to compute preorder, inorder, and postorder traversals of a binary tree in a single traversal using a stack-based state management approach, Binary Tree, Tree Traversal, Preorder Traversal, In-order Traversal, Postorder Traversal, Stack, Iterative Algorithm, Time Complexity, Space Complexity, inorder traversal, state management, stack, preorder traversal, postorder traversal, tree traversal, DP State Management.
Problem Statement Given the root of a Binary Tree, your task is to return the preorder, inorder, and postorder traversal sequences of the given tree by performing just one traversal. Input Specification The input will be a sequence of integers representing the nodes of the binary tree. The tree structure is described in a level order fashion, where 1 indicates a null node. Output Specification The output should consist of three separate lists (or arrays): the preorder traversal, the inorder traversal, and the postorder traversal of the given binary tree. Sample Test Cases Example 1: Input: Binary Tree: 1 2 3 4 5 6 7 1 1 8 1 1 1 9 10 Output: Example 2: Input: Binary Tree: 4 2 5 3 1 7 6 1 9 1 1 8 1 1 Output: