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Grokking the Coding Interview Patterns in C#

Solution: Palindrome Linked List

Understand how to determine if a singly linked list is a palindrome by using the fast and slow pointers technique. This lesson guides you through finding the list midpoint, reversing the second half for comparison, and restoring the original list structure while maintaining O(n) time and O(1) space complexity.

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Statement

Given the head of a linked list, your task is to check whether the linked list is a palindrome or not. Return TRUE if the linked list is a palindrome; otherwise, return FALSE.

Note: The original structure of the linked list must remain unchanged before and after the checking process.

Constraints:

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

  • 1≤1\leq n ≤500\leq500 ...