Answer: Dropbox OA Question 2024 August | Linked List | on-campus

Solution: Linked List Cycle — Floyd's Slow and Fast Pointer Approach We use Floyd's Cycle Detection Algorithm (also called the Tortoise and Hare algorithm). We maintain two pointers: Slow pointer: moves one step at a time. Fast pointer: moves two steps at a time. If there is no cycle, the fast pointer will eventually reach null. If there is a cycle, the fast pointer will loop around and eventually catch up to the slow pointer — they will meet at ...