DAY 31 - Understanding Cyclic Linked Lists

Before solving EPI 8.3 (Test for Cyclicity), I spent some time understanding what a cyclic linked list actually is. In this video, I use Excalidraw to visualize the structure of a cyclic linked list and walk through a helper function that creates one. We look at how a normal linked list ends with null, while a cyclic linked list has its tail pointing back to an earlier node. I also discuss the edge cases involved when creating the cycle and how all the pieces of the helper function come together. The goal wasn't optimization yet—it was building intuition for the problem before moving on to cycle detection algorithms. #Algorithms #Python #LinkedLists #EPI