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Problem: Linked List Cycle III

Medium
30 min
Explore how to detect cycles in linked lists and measure their length using fast and slow pointer techniques. This lesson guides you through understanding the problem constraints and implementing an efficient solution to determine if a cycle exists and its size.

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 [0,104][0, 10^4].

  • 105-10^5 \leq Node.value 105\leq 10^5

Problem
Ask
Submissions

Problem: Linked List Cycle III

Medium
30 min
Explore how to detect cycles in linked lists and measure their length using fast and slow pointer techniques. This lesson guides you through understanding the problem constraints and implementing an efficient solution to determine if a cycle exists and its size.

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 [0,104][0, 10^4].

  • 105-10^5 \leq Node.value 105\leq 10^5