intermediateDSA — Lists, Stacks & Queues

Detect a loop in a Linked List

Tests whether you know Floyd's cycle detection (slow/fast pointer) technique.

Ready to master this question?

Generate a complete walkthrough — background, the full answer in plain language, a working code example explained line by line, a real-world scenario, common mistakes, and how this same question gets asked in different ways.

Sign in to generate a response

Next Step

Continue to Find the Kth largest element in a stream of numbers, where new numbers keep arriving. →← Back to all Core Java questions