Question

Stack works on the principle of ________.

• A. Mid Element First
• B. First In First Out
• C. Last In First Out
• D. Last In Last Out

Answer 1

The Correct Option is C

A stack functions on the Last In First Out (LIFO) principle. Consequently, the most recently inserted element is the first to be retrieved. This concept is commonly illustrated with a stack of plates, where additions and removals are restricted to the uppermost plate. The stack data structure primarily supports operations at a single extremity:

• Push: Appends an element to the stack's apex.
• Pop: Deletes the element from the stack's apex.

This mechanism guarantees that the most recently inserted element is accessed first, thereby upholding the LIFO methodology.