Introduction to Stack
Explore the concept of stacks, a linear data structure that follows the last in, first out (LIFO) principle. Learn how stacks work, their key operations like push and pop, and see practical examples in Go. Understand where stacks are used in real scenarios such as function calls and undo operations.
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Arrays, slices, and linked lists are flexible structures. We can access, insert, or remove elements at many positions. That flexibility is useful, but it also means these structures do not automatically enforce a rule about the order in which elements are processed. For specific categories of problems, such as tracking function calls, undoing operations, or parsing nested structures, we often need the most recently added item handled first.
This is a primary use case for stacks. A stack enforces last in, first out (LIFO) ordering, which is suited for scenarios where the most recent item is processed first.
What is a stack?
A stack is a linear data structure that stores elements in a particular order. It follows the last in, first out (LIFO) principle. This means that the most recently added element is the first one to be ...