Question

Which of the following is an incorrect statement about stack?

• A. is a First-In-First-Out(FIFO)structure
• B. is a buffer in which data items are retrieved in reverse order from which they are place in the buffer
• C. Can be created as an array
• D. All of the above

Answer 1

The correct option is A is a First-In-First-Out(FIFO)structure

First-in-first-out (FIFO) structure is an incorrect statement about stack.

A stack is a container of objects that are inserted and removed according to the last-in first-out (LIFO) principle. In the push down stacks only two operations are allowed: push the item into the stack, and pop the item out of the stack.

FIFOis a method of processing and retrieving data. In a FIFO system, the first items entered are the first ones to be removed. In other words, the items are removed in the same order they are entered.