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Problem: Linked List Cycle
Easy
15 min
Explore how to detect if a linked list contains a cycle by using fast and slow pointers. This lesson teaches you to apply this essential pattern correctly, enabling you to handle related coding interview problems with confidence.
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
Easy
15 min
Explore how to detect if a linked list contains a cycle by using fast and slow pointers. This lesson teaches you to apply this essential pattern correctly, enabling you to handle related coding interview problems with confidence.
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