EPISODE · Jan 5, 2026 · 10 MIN
A-Level Computer Science – Stacks Explained (LIFO & Stack Operations) (OCR / AQA) | S7:Ep4
from Ultimate A-Level Computer Science Podcast · host Teacher of Computing - AHC
This episode provides an educational overview of stacks within computer science, It introduces stacks as abstract data types operating on a Last-In, First-Out (LIFO) principle, contrasting them with queues which are First-In, First-Out (FIFO). The document details essential stack operations like push (adding an item), pop (removing an item), peek (viewing the top item), isEmpty (checking if empty), and isFull (checking if full), along with concepts like overflow and underflow. Furthermore, it explains how stacks are implemented using lists and highlights their practical application in subroutine calls for managing return addresses, parameters, and local variables on the call stack.
What this episode covers
This episode provides an educational overview of stacks within computer science, It introduces stacks as abstract data types operating on a Last-In, First-Out (LIFO) principle, contrasting them with queues which are First-In, First-Out (FIFO). The document details essential stack operations like push (adding an item), pop (removing an item), peek (viewing the top item), isEmpty (checking if empty), and isFull (checking if full), along with concepts like overflow and underflow. Furthermore, it explains how stacks are implemented using lists and highlights their practical application in subroutine calls for managing return addresses, parameters, and local variables on the call stack.
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A-Level Computer Science – Stacks Explained (LIFO & Stack Operations) (OCR / AQA) | S7:Ep4
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