Check if Linked List is Palindrome
Medium Problems of Singly Linked List DSA practice problem on Onlearn.
Difficulty: medium.
Topics: How to check if a singly linked list is a palindrome?, Linked List, Node, Singly Linked List, Algorithm, Time Complexity, Space Complexity, Big O Notation, Stack, Two Pointers, Recursion, Palindromes, in-place algorithms, linked list manipulation, linked list traversal, stack, recursion, time complexity analysis, two pointer technique, Check for Identical Trees.
Palindrome Linked List Given the head of a singly linked list, return true if it is a palindrome or false otherwise. Input Specification The input consists of a series of integers representing the nodes of a singly linked list. Output Specification Return true if the linked list is a palindrome, false otherwise. Sample Test Cases Example 1: Explanation: A linked list with values "1 2 3 2 1" is a palindrome because its elements read the same from left to right and from right to left, making it symmetrical and mirroring itself. Example 2: Explanation: A linked list with values "1 2 3 3 2 1" is a palindrome because it reads the same forwards and backwards. Example 3: Explanation: The linked list "1 2 3 2 3" is not a palindrome because it reads differently in reverse order, where "3 2 3 2 1" is not the same as the original sequence "1 2 3 2 3."