Stack • Core Concepts

Stack Data Structure

A Stack is a linear data structure that follows a particular order in which operations are performed. The order is LIFO (Last In First Out).

LIFO Principle

The last element added to the stack will be the first element removed from it. This is exactly how a stack of plates works in a cafeteria.

Single Point of Entry

Unlike arrays where you can access any index, a Stack restricts your access to only one end—the Top. All insertions and deletions happen here.

Memory Layout

A Stack can be implemented using contiguous memory (Arrays) or scattered memory (Linked Lists). The Abstract Data Type (ADT) remains the same regardless of the underlying memory.

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Stack • Core Concepts

Stack Data Structure

A Stack is a linear data structure that follows a particular order in which operations are performed. The order is LIFO (Last In First Out).

LIFO Principle

The last element added to the stack will be the first element removed from it. This is exactly how a stack of plates works in a cafeteria.

Single Point of Entry

Unlike arrays where you can access any index, a Stack restricts your access to only one end—the Top. All insertions and deletions happen here.

Memory Layout

A Stack can be implemented using contiguous memory (Arrays) or scattered memory (Linked Lists). The Abstract Data Type (ADT) remains the same regardless of the underlying memory.