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Problem: Linked List Cycle
Medium
30 min
Explore how to detect cycles in a linked list by using fast and slow pointers. This lesson helps you understand the problem and implement a solution to identify if a cycle exists, preparing you for related coding interview questions.
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
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Problem
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Submissions
Problem: Linked List Cycle
Medium
30 min
Explore how to detect cycles in a linked list by using fast and slow pointers. This lesson helps you understand the problem and implement a solution to identify if a cycle exists, preparing you for related coding interview questions.
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