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Grokking the Coding Interview Patterns in C++

Solution: Remove Linked List Elements

Explore techniques to remove all nodes with a given value from a linked list by manipulating it in place. Understand the use of dummy nodes and two pointers to traverse and modify the list without extra space. This lesson helps you implement and analyze an efficient O(n) time and O(1) space complexity solution for linked list modification tasks.

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Statement

You are given the head of a linked list and an integer k. Remove all nodes from the linked list where the node’s value equals k, and return the head of the updated list.

Constraints:

  • The number of nodes in the list is in the range [0,103][0, 10^3].

  • ...