Master the steps to use fast and slow pointers for cycle detection and mid-point identification.

Coding

Fast and Slow Pointers

Efficiently prepare for coding interviews with strategies from FAANG engineers. Avoid the LeetCode grind and simplify your interview prep with real-world questions from top companies.

The ultimate guide to the System Design Interview – developed by Meta & Google engineers. Master distributed system fundamentals, and practice with real-world interview questions & mock interviews.

System Design

The essential guide to API Design & Product Design Interviews – developed by FAANG engineers. Master product design fundamentals & get hands-on with real-world APIs.

API Design

A battle-tested guide to Object Oriented Design Interviews – developed by FAANG engineers. Master OOD fundamentals & practice real-world interview questions.

Low Level Design Interview Using OOD Principles

Your essential EM Interview crash course. Learn strategies from FAANG hiring managers to demonstrate your leadership skills & experience to interviewers.

Engineering Management and Leadership Interviews

The ultimate guide to behavioral interviews. Developed by FAANG engineers. Use real-world questions, video recording, and structured strategies to get interview-ready in just a few hours.

Behavioral

# 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.

- $0\leq$ `n` $\leq500$
- $-10^5 \leq$ `Node.value` $\leq 10^5$



Let’s solve the Linked List Cycle problem using the Fast and Slow Pointers pattern.

Solution: Linked List Cycle

Statement▼

Solution: Linked List Cycle

Statement▼