A-Level Computer Science – Depth-First & Breadth-First Search Explained (OCR / AQA) | S12:Ep5

<p>This episode provides an <strong>overview of graph traversal algorithms</strong>, specifically <strong>depth-first search (DFS)</strong> and <strong>breadth-first search (BFS)</strong>. It <strong>explains how to trace</strong> and <strong>describe typical applications</strong> for each algorithm, including <strong>illustrations of their operational steps</strong> using a sample graph. The text further <strong>details the data structures employed</strong> by each algorithm—a <strong>stack for DFS</strong> and a <strong>queue for BFS</strong>—and <strong>examines their complexity</strong>. Finally, it <strong>briefly discusses the application of these concepts to tree traversals</strong>, highlighting similarities and differences.</p>