Stack Explained in 60 Seconds #Shorts

3D animation showing push and pop operations on a stack, demonstrating the Last-In-First-Out principle.

Subject: Data Structures

--- Transcript ---
1. A stack is a Last-In-First-Out (LIFO) data structure. Elements are added and removed from the same end, called the top.
2. Push 7 onto the stack. It sits on top of 15. The top of the stack is now 7, highlighted in red.
3. Push 23. It becomes the new top. Notice how each new element is stacked vertically above the previous ones.
4. Push 42. The stack grows upward. The red highlighting always shows which element is at the top of the stack.
5. Push 8. It goes on top of 23. This demonstrates the LIFO principle: last in, first out.
6. Pop again. We get 8, the most recently added element. The stack shrinks and 23 is back on top.
7. Another pop removes 23. Now 7 is on top again. We can only access the topmost element.
8. Finally, push 99. Stacks are used everywhere: function call stacks, undo operations, and expression evaluation.

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