👉 In computer science, "stack" is a data structure that allows elements to be added and removed from the top of the stack. It's a special type of queue where the end element can be popped off at any time without removing or adding elements in between. For example, if you have three stacks: - The top element is 2 - The second element is 3 - The third element is 4 You can perform operations like: 1. Add an element to the stack
