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Problem
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Problem: Linked List Cycle III
med
30 min
Understand how to detect and measure the length of a cycle in a linked list using fast and slow pointers. This lesson helps you apply cycle detection methods to solve common linked list problems in coding interviews efficiently.
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
. Node.value
Examples
Understand the problem
Figure it out!
Try it yourself
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Tap here to switch tabs
Problem
Submissions
Problem: Linked List Cycle III
med
30 min
Understand how to detect and measure the length of a cycle in a linked list using fast and slow pointers. This lesson helps you apply cycle detection methods to solve common linked list problems in coding interviews efficiently.
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
. Node.value
Examples
Understand the problem
Figure it out!
Try it yourself
Unlock AI-Powered LearningUpgrade to smarter learning with instant explanations of Ask Agent, Personalized Interview Prep, Real-World Projects, 3 AI Mock Interviews per month, and Personalized Paths