LLD Data Structures in Design Context: How Does a HashMap Find the Right Location? Understanding Hashing Without the Math

"The real magic of a HashMap isn't that it stores data. It's that it knows where to start looking."

In the previous article, we learned that a HashMap organises information around unique keys.

Instead of searching every stored object one by one, it uses the key to retrieve information quickly.

That naturally raises another question.

"If millions of objects are stored inside a HashMap, how does it know where to begin?"