Correct option is A
In
binary trees, the most common traversal techniques follow a well-defined order based on the tree's structure. These include
Preorder, Inorder and Postorder (Depth-First Traversal) and
Level Order Traversal (Breadth-First Traversal). However,
randomized traversal is
not a defined technique in tree traversal.
Important Key Points:
1.
Common Tree Traversal Techniques:
·
Preorder Traversal (Root → Left → Right)
· Visits the
root node first, then recursively traverses the
left subtree, followed by the
right subtree.
· Used in
copying trees and
expression evaluation.
·
Inorder Traversal (Left → Root → Right)
· Visits the
left subtree first, then the
root, followed by the
right subtree.
· Used for
retrieving sorted elements in a Binary Search Tree (BST).
·
Postorder Traversal (Left → Right → Root)
· Visits the
left subtree first, then the
right subtree, and finally the
root.
· Used in
deleting trees and
evaluating expressions.
·
Level Order Traversal (Breadth-First Traversal, BFS): Visits nodes level by level,
from top to bottom, left to right.
2.
Why Randomized Traversal is Incorrect?
·
Randomized traversal is not a standard tree traversal method.
· Traversing a binary tree
randomly does not preserve the tree structure or provide meaningful order for operations.
· There is
no defined algorithm for "random traversal" in trees.
Knowledge Booster:
· Preorder, Inorder and Postorder are DFS-based traversals.
· Level Order Traversal uses a queue (BFS approach).
· Tree traversal is used in applications like expression tree evaluation, BST operations, and graph processing.
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