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Data Structure: Stacks as Abstract Data Type (ADT)

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Data Structure: Stacks as Abstract Data Type (ADT)

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Questions and Answers

What is the principle followed by a stack data structure?

Sequential access

First-in-first-out (FIFO)

Last-in-first-out (LIFO) (correct)

Random access

Which term is used for the insertion operation in a stack?

Push (correct)

Append

Insert

Add

How are elements removed from a stack?

Pop (correct)

Dequeue

Remove

Extract

What does the variable TOP being NULL indicate about the stack?

The stack is empty Signup and view all the answers

How is a stack data structure represented?

Linear array Signup and view all the answers

Explain the principle of last-in-first-out (LIFO) system with respect to a stack data structure.

The principle of last-in-first-out (LIFO) system in a stack data structure means that the element which is inserted last will be the first one to be removed. In other words, the most recently added element is the first one to be removed from the stack. Signup and view all the answers

Describe the two terms used for insert and delete operations in a stack data structure.

The two terms used for insert and delete operations in a stack data structure are 'PUSH' and 'POP'. 'PUSH' is used for the insertion operation, and 'POP' is used for the deletion operation. Signup and view all the answers

How can a stack data structure be represented?

A stack data structure can be represented by means of a one way list or a linear array. The stack is maintained by a linear array, where a variable TOP contains the location of the top element of the stack, and a variable N gives the maximum number of elements that can be held by the stack. Signup and view all the answers

What does the condition where TOP is NULL indicate about the stack?

The condition where TOP is NULL indicates that the stack is empty. Signup and view all the answers

Explain the different implementations of a stack data structure.

A stack data structure can be implemented using a one way list or a linear array. The stack is maintained by a linear array, where a variable TOP contains the location of the top element of the stack, and a variable N gives the maximum number of elements that can be held by the stack. Signup and view all the answers