Data-Structures

Understanding data structures can be challenging when they’re presented as abstract concepts. Let’s make them tangible by exploring them through something we all know: a coffee shop. From the order queue to delivery routes, every aspect of running a coffee shop mirrors fundamental computer science concepts. In this comprehensive guide, we’ll explore 25+ data structures through the lens of coffee shop operations, complete with visualizations and Go implementations. Part 1: The Basics Revisited The Order Line - Queue Every morning at the coffee shop, customers line up in order. First in, first out (FIFO). The person who arrives first gets served first. This is a queue. ...

The Aha Moment: Every Cell Is a Node If you’ve ever felt stuck staring at a grid problem, unsure where to start, you’re not alone. The breakthrough comes when you realize: a matrix is just a graph in disguise. Each cell in a 2D array is a node. The connections between adjacent cells (up, down, left, right, and sometimes diagonals) are the edges. Once this clicks, an entire category of problems becomes approachable using familiar graph algorithms. ...