Test: Stack - 1 - CUET Humanities MCQ

In computer science, a stack is an abstract data type that serves as a collection of elements, with two main principal operations: push, which adds an element to the collection, and pop, which removes the most recently added element that was not yet removed.

True, because the data item that is added as the first element will at the bottom most position in the stack. In order to remove it, we have to remove (POP) all the elements before that.

An empty list is denoted by this notation:
list = NULL

Create(s) is used on stack to create an empty stack.

In the first print line, 4+2 behaves like a string. So, it is printed as 42.
And the second print line is (2+2) = 4.

Polish notation means Prefix.

If one tries to delete an element from an empty stack, the concept is called underflow.

A non-linear data structure is that in which the data elements do not follow a definite structure.

All are the operations of a stack.

Insertion and deletion in stack take place only at one end which is known as TOP.