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Solution: Remove Duplicates from a Linked List

Understand how to remove duplicate nodes from a singly linked list in-place using C++. This lesson demonstrates a nested traversal technique, updating node references to skip duplicates while maintaining list integrity. Explore the algorithm, code implementation, and its quadratic time and constant space complexity.

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Statement

Given the head of a singly linked list, remove any duplicate nodes from the list in place, ensuring that only one occurrence of each value is retained in the modified list.

Constraints:

Let n be the number of nodes in a linked list.

  • 00 \leq n 500\leq 500

  • ...