Solution: Linked List Cycle
Explore the fast and slow pointers technique to detect if a linked list contains a cycle. Understand both naive and optimized approaches, and learn to implement a solution that efficiently identifies cycles with O(n) time and O(1) 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