Crio.Do Product Engineer Interview Questions and Answers

A stack is a data structure that follows the Last In, First Out (LIFO) principle.

• Elements are added and removed from the top of the stack.

• Common operations include push (add element) and pop (remove element).

• Examples of stacks include the call stack in programming and the undo feature in text editors.

A queue is a data structure that follows the First In First Out (FIFO) principle, where elements are added at the rear and removed from the front.

• Elements are added to the rear of the queue and removed from the front

• Common operations include enqueue (add to rear) and dequeue (remove from front)

• Examples of queues include waiting lines at a grocery store or a printer queue