Search⌘ K

Solution: Linked List Cycle

Understand how to detect cycles in singly linked lists by implementing Floyd’s cycle-finding algorithm. This lesson explores pointer techniques to identify cycles, providing code examples and analyzing time and space complexity for an efficient solution.

We'll cover the following...

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 n 500\leq 500

  • 5×103-5 \times 10^3 \leq ...