Module Artifacts — 9 items
Outlines the module's learning topics spanning hash table fundamentals (structure, key-value purpose, array-based design), hash function properties (determinism, uniform distribution, speed), and collision resolution strategies (chaining and open addressing), serving as a navigational overview for learners and instructors to understand the scope and sequence of the module.
Introduces hash tables conceptually — explaining what they are, why they matter, and how they achieve fast storage and retrieval regardless of collection size — serving as a starting-point reading for learners new to the data structure.
Explains how a hash table is built on top of a contiguous internal array — covering how buckets are indexed and how the array forms the foundation for O(1) operations — helping learners understand the underlying memory structure before exploring higher-level behavior.
Covers the design principles and required properties of hash functions — including how keys of various types are converted to array indices and what makes a hash function high-quality — so learners can evaluate and write effective hash functions for their implementations.
Explains the chaining collision-resolution strategy — where colliding keys are stored together at the same bucket using a linked structure — so learners understand how to implement and reason about one of the most common approaches to handling hash collisions.
Explains open addressing as a collision-resolution strategy — covering probing techniques such as linear, quadratic, and double hashing that find alternative slots within the array when a collision occurs — so learners can compare it with chaining and understand its trade-offs.
Analyzes hash table time complexity — examining average-case and worst-case performance for insertion, deletion, and lookup, the role of load factor, and conditions that degrade efficiency — equipping learners and instructors with the tools to evaluate and tune hash table performance.
Walks learners through building a hash table from scratch in JavaScript using chaining or open addressing — demonstrating how insert, lookup, and delete operations are coded — serving as a hands-on coding reference that bridges conceptual understanding and practical implementation.
Walks learners through building a hash table from scratch in JavaScript using chaining or open addressing — demonstrating how insert, lookup, and delete operations are coded — serving as a hands-on coding reference that bridges conceptual understanding and practical implementation.