Solution: Linked List Cycle
Understand how to apply fast and slow pointer techniques to detect cycles in linked lists. Learn the step-by-step approach to identify if a cycle exists using two pointers moving at different speeds, optimizing for both time and space complexity.
Statement
Given the head of a linked list, determine whether the list contains a cycle. A cycle exists if a node in the list can be revisited by continuously following the next pointers. Return TRUE if a cycle is present; otherwise, return FALSE.
Constraints:
Let n be the number of nodes in a linked list.
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n