
Depth-first Search – (Preorder, Inorder, and Postorder)
Interactive Video
•
Information Technology (IT), Architecture
•
University
•
Practice Problem
•
Hard
Wayground Content
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary focus of this lecture on tree traversals?
Algorithm optimization
Theoretical understanding
Interview preparation
Practical coding techniques
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the trick for preorder traversal, when is a node added to the result?
When it has no children
When visited for the last time
When visited for the second time
When visited for the first time
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During inorder traversal using the trick, when is a node added to the result?
When it has no children
When visited for the second time
When visited for the first time
When visited for the last time
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In postorder traversal, when is a node added to the result according to the trick?
When visited for the second time
When visited for the first time
When visited for the last time
When it has no children
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sequence of node visits in a preorder traversal?
Left, Root, Right
Right, Left, Root
Root, Left, Right
Left, Right, Root
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an inorder traversal, where is the root node placed in the sequence?
After left and right
Before left and right
Between left and right
Only if it has children
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the order of node visits in a postorder traversal?
Left, Right, Root
Right, Left, Root
Left, Root, Right
Root, Left, Right
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