a stack is a particular kind of abstract data type or collection in which the principal (or only) operations on the collection are the addition of an entity to the collection, known as push and removal of an entity, known as pop. Reference: - https://en.wikipedia.org/wiki/Stack_(abstract_data_type)
Stack A last-in, first-out (LIFO) data structure.
Urgenthomework helped me with finance homework problems and taught math portion of my course as well. Initially, I used a tutor that taught me math course I felt that as if I was not getting the help I needed. With the help of Urgenthomework, I got precisely where I was weak: