Grokking the Coding Interview: The Original Course
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Solution: Copy List with Random Pointer

Problem Statement

You are given a linked list where each node contains an additional random pointer. This pointer could point to any node in the list or be null.

Create a deep copy of this linked list. The deep copy should have n new nodes, where each new node's value matches the value of its corresponding node in the original list. Additionally, both the next and random pointers of the new nodes should point to the new nodes in the copied list.

The pointers in the copied list should maintain the same structure as the original list

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Kirill Kuts

Kirill Kuts

· a month ago

it looks like original pattern description suggests using map (extra space) vs this solution avoids it, which is great but might be a bit confusing

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