Practice Empty Check (39.1.12) - User defined lists - Part B - Data Structures and Algorithms in Python
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Empty Check

Practice - Empty Check

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Practice Questions

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Question 1 Easy

What should you do first when attempting to delete a node from a linked list?

💡 Hint: Think about what an empty list means in this context.

Question 2 Easy

How do you know if the first node is the only node in the list?

💡 Hint: What happens when you remove the only element from a list?

4 more questions available

Interactive Quizzes

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Question 1

What is the first step when attempting to perform a delete operation on a linked list?

Check if the list is empty
Delete the first node
Return if the node does not exist

💡 Hint: Consider the state of the list before any operations.

Question 2

When deleting the first node in a list with multiple nodes, what should be done?

True
False

💡 Hint: What happens to the first node in a multi-node list?

1 more question available

Challenge Problems

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Challenge 1 Hard

You are given a linked list. Develop a recursive function that will delete all nodes with a specified value and return the new head of the list. What steps are critical to ensure no empty nodes remain?

💡 Hint: Consider how you would trace back your steps to make adjustments after deletion.

Challenge 2 Hard

Explain how the iterative delete function would differ from a recursive one when managing the end of the list. What specific checks must be implemented?

💡 Hint: Pay attention to how node references change after deletion.

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