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Problem
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Problem: Linked List Cycle
15 min
Understand the method to detect cycles in a linked list by using fast and slow pointers. This lesson helps you identify if a linked list loops back on itself, enhancing your ability to solve cycle detection problems efficiently.
Statement
Given the head of a linked list, determine whether the list contains a cycle. A cycle exists if a node in the list can be revisited by continuously following the next pointers. Return TRUE if a cycle is present; otherwise, return FALSE.
Constraints:
Let n be the number of nodes in a linked list.
-
n -
Node.value
Examples
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Problem
Submissions
Problem: Linked List Cycle
15 min
Understand the method to detect cycles in a linked list by using fast and slow pointers. This lesson helps you identify if a linked list loops back on itself, enhancing your ability to solve cycle detection problems efficiently.
Statement
Given the head of a linked list, determine whether the list contains a cycle. A cycle exists if a node in the list can be revisited by continuously following the next pointers. Return TRUE if a cycle is present; otherwise, return FALSE.
Constraints:
Let n be the number of nodes in a linked list.
-
n -
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