A* Search Courses and Certifications

CodeHelp - by Babbar

Binary Search Advanced Problems

Solve advanced binary-search problems through book allocation, painter’s partition, and aggressive cows examples.

• YouTube
• 1 hour 5 minutes
• Self-Paced
• Free Video

CodeHelp - by Babbar

Binary Search Interview Questions - Google, Amazon, Microsoft

Solve rotated-array search and integer square-root problems using binary search, including floating-point results.

• YouTube
• 56 minutes
• Self-Paced
• Free Video

CodeHelp - by Babbar

Binary Search Interview Questions - Google, Amazon, Microsoft

Solve LeetCode interview problems with binary search, including occurrence counting and finding peaks in mountain arrays.

• YouTube
• 42 minutes
• Self-Paced
• Free Video

CodeHelp - by Babbar

Binary Search Explained - Theory + Code

Learn binary search through examples, implementation, optimization, complexity analysis, applications, and comparison with linear search.

• YouTube
• 39 minutes
• Self-Paced
• Free Video

Reducible

Depth First Search Explained - Algorithm, Examples, and Code

An intuitive walkthrough of depth-first search, from graph traversal and recursive or iterative code to preorder/postorder traversals and graph applications.

• YouTube
• 21 minutes
• Self-Paced
• Free Video

The Royal Institution

Astrobiology and the Search for Extraterrestrial Life

The Drake equation suggests the galaxy should teem with civilizations—so why haven’t we found them?

• YouTube
• 36 minutes
• Self-Paced
• Free Video

Kunal Kushwaha

Binary Search Interview Questions - Google, Facebook, Amazon

Work through binary search interview problems on sorted, rotated, mountain, and unbounded arrays, from ceiling and floor searches to partitioning.

• YouTube
• 4 hours 2 minutes
• Self-Paced
• Free Video

Kunal Kushwaha

Binary Search Algorithm - Theory + Code

Learn how binary search works, why it is faster than linear search, and how to implement it, including an order-agnostic version.

• YouTube
• 58 minutes
• Self-Paced
• Free Video

Kunal Kushwaha

Linear Search Algorithm - Theory, Code, Questions

Learn linear search through its step-by-step method, complexity analysis, code, and practice problems involving strings, ranges, and arrays.

• YouTube
• 1 hour 16 minutes
• Self-Paced
• Free Video

Code with Ania Kubów

Build a Semantic Search App Using Next.js and SingleStoreDB

Build a semantic search app in Next.js and SingleStoreDB, using one simple function to power search.

• YouTube
• 56 minutes
• Self-Paced
• Free Video

The Royal Institution

The Search for a Theory of Everything – with Yang-Hui He

A historical and mathematical journey through the search for a unified theory of everything, culminating in string theory and modern geometry.

• YouTube
• 1 hour 2 minutes
• Self-Paced
• Free Video

Wes McDowell

SEO Has Already Changed - What You Missed About Modern Search Optimization

Discover how SEO has evolved beyond traditional Google optimization and why your traffic may be disappearing due to outdated search strategies.

• YouTube
• 16 minutes
• Self-Paced
• Free Video

Back To Back SWE

Trees, Binary Trees, and Binary Search Trees - Questions and Explanations

Work through recursive and traversal-based solutions to binary-tree interview problems, from serialization and ancestor queries to balance and symmetry checks.

• YouTube
• 2 hours 26 minutes
• Self-Paced
• Free Video

James Briggs

Computer Vision and Search Course

Trace image search from color histograms and visual words to CLIP-based zero-shot classification and object detection.

• YouTube
• 4 hours 34 minutes
• Self-Paced
• Free Video

James Briggs

Vector Similarity Search and Faiss Course

Compare traditional and vector similarity methods, then build and evaluate Faiss indexes for fast search, filtering, and compressed vector retrieval.

• YouTube
• 6 hours 16 minutes
• Self-Paced
• Free Video