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Grokking the Coding Interview Patterns

Solution: Palindrome Linked List

Understand how to detect palindromes in singly linked lists by finding the midpoint with two pointers, reversing the second half, comparing both halves, and restoring the original list structure.

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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 ...