PYTHON PROBLEM 258 · Interview-Level

Copy a random-pointer list: No random links

Copy a list where every random pointer is None.

linked list · deep copy · hash maplinked listdeep copyhash map

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests copy a random-pointer list. It belongs to the Core Data Structures: Stacks, Queues, Linked Lists, Heaps, and Intervals roadmap and uses the linked list · deep copy · hash map pattern.

Choosing structures by operations, monotonic reasoning, priority queues, and interval processing.

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SKILL TO CARRY FORWARD

Pattern relevance

This exercise strengthens linked list · deep copy · hash map. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.