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Solution: Linked List Cycle III

Explore how to use fast and slow pointers to detect cycles in linked lists and determine their exact length. Understand the step-by-step algorithm to solve cycle length problems efficiently using O(n) time and O(1) space complexity.

Statement

Given the head of a linked list, determine the length of the cycle present in the linked list. If there is no cycle, return 0.

A cycle exists in a linked list if there is some node in the list that can be reached again by continuously following the next pointer.

Constraints:

  • The number of nodes in the list is in the range ...