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Question: Given the head of a singly linked list, return true if it is a palindrome. Example 1: Input: head = [1,2,2,1] Output: true Example 2: Input:...
Question: Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null. There is a cycle in a linked...
Given the head of a singly linked list, reverse the list, and return the reversed list. Example 1: Question: Example 1: Input: head =...