Solution: Linked List Cycle
Explore how to detect cycles in a linked list by implementing the fast and slow pointers approach. Understand why this method efficiently identifies cycles in a single pass with constant space, and learn how to apply it to solve coding interview questions.
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.
-
n