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Grokking the Coding Interview Patterns in JavaScript

Solution: Palindrome Linked List

Explore the fast and slow pointers technique to identify if a linked list is a palindrome. Learn how to locate the midpoint, reverse the second half, compare both halves, and restore the list to its original 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 ...