How should I practice Linked List Palindrome in Constant Space?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Meta phone screen problems in FastPrep.

Is Linked List Palindrome in Constant Space associated with Meta?

FastPrep tags this as a Meta phone screen coding practice problem when the problem catalog has that company and stage context.

Meta● EasyFULLTIMEPHONE SCREEN

Given the head of a singly linked list, return true when its values read the same from left to right and right to left; otherwise return false.

Meet the reported follow-up: use O(n) time and O(1) extra space, where n is the number of nodes.

isPalindrome(head: ListNode) → boolean

head = [1,2,2,1]return = true

The linked task reference gives this even-length palindrome.

head = [1,2]return = false

The linked task reference gives this non-palindrome.

head = [1,2,3,2,1]return = true

An odd middle node is unpaired; the remaining symmetric values match.