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Solution: Palindrome Linked List

Understand how to determine if a linked list is a palindrome by using the fast and slow pointer technique to find the midpoint, reversing the second half for comparison, and then restoring the list. This lesson covers an efficient, in-place approach with O(n) time and O(1) space complexity.

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 ...