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Challenge: Linked List Cycle—Hashing

Understand how to determine if a linked list contains a cycle by using hashing methods. This lesson helps you implement a solution in C++ to detect cycles efficiently, enhancing your problem-solving skills for coding interviews.

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Statement

Given the head of a linked list, check whether or not a cycle is present in the linked list. A cycle is present in a linked list if at least one node can be reached again by traversing the next pointer. If a cycle exists, return TRUE, otherwise return FALSE.

Constraints:

Let n be the number of nodes in a linked list.

  • 00 \leq ...