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Notarena
Notarena

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Most Asked DSA Interview Questions

Q: How do you detect a cycle in a linked list?

A: To detect a cycle in a linked list, you can use Floyd's Cycle Detection Algorithm, also known as the Tortoise and Hare Algorithm. In this approach, two pointers (slow and fast) traverse the list. The slow pointer moves one step at a time, while the fast pointer moves two steps. If the linked list contains a cycle, the two pointers will eventually meet; otherwise, the fast pointer will reach the end of the list.

This algorithm runs in O(n) time complexity and uses O(1) space.

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dhanush9952 profile image
Dhanush • Edited

Title is mentioned as Most Asked DSA Interview Questions.

But you have mentioned only one question here.

Add few more questions or change the title accordingly.

Your explanation was good.