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Grokking the Coding Interview Patterns

Solution: Palindrome Linked List

Explore the step-by-step method to determine if a singly linked list is a palindrome. Learn to find the midpoint using fast and slow pointers, reverse the second half, compare halves, and restore the list, all while maintaining efficient time and 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 ...