Easy

Quiz

#234 Palindrome Linked List

APPROACH

Given the head of a singly linked list, return true if the list reads identically from front to back and back to front, or false otherwise.

Example 1:

Input: head = [1,2,2,1]

Output: true

Example 2:

Input: head = [1,2]

Output: false

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What is the optimal approach for this problem?