In what data processing style is the stack data structure used?

A stack is a data structure that operates on the Last In, First Out (LIFO) principle, meaning the last added element is retrieved first. This style of data processing is called a "stack" or "reverse order".

In Android, a stack is often used to manage navigation between screens (activities or fragments), where the most recently opened screen is on top and is closed when the back button is pressed, returning the user to the previous screen.

Example of using a stack:

Stack<String> stack = new Stack<>();
stack.push("First");
stack.push("Second");
String top = stack.pop(); // "Second"