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Solution: Palindrome Linked List

Explore how to verify whether a singly linked list is a palindrome by finding its midpoint with fast and slow pointers, reversing the second half for comparison, then restoring the original list structure. This lesson helps you implement an efficient O(n) time and O(1) space solution while preserving the list.

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.

  • 11\leq n 500\leq500 ...