Question 6 - Past Year - 2 Mark Questions - Chapter 3 - Stacks

Last updated at August 14, 2026 by

Define stack.

Answer:

A stack is a data structure in which elements are arranged in a linear order. 

In a stack, insertion and deletion takes place at one end i.e., the top of the stack. 

 

STACK - Teachoo.png

Additional points: 

  • Inserting into a stack is called a PUSH operation and deleting from a stack is called a POP operation.
  • A stack follows the LIFO principle i.e., an element which is inserted last will be the first one to be taken out.
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Transcript

Define stack. Answer: A stack is a data structure in which elements are arranged in a linear order. In a stack, insertion and deletion takes place at one end i.e., the top of the stack. Additional points: Inserting into a stack is called a PUSH operation and deleting from a stack is called a POP operation. A stack follows the LIFO principle i.e., an element which is inserted last will be the first one to be taken out.

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