Show HN: Algorithms and Data Structures in TypeScript – Free Book (~400 Pages) https://ift.tt/THwjLbu

Show HN: Algorithms and Data Structures in TypeScript – Free Book (~400 Pages) I started writing this book 10 years ago in JavaScript, got through a few chapters (asymptotic notation, basic techniques, start of sorting), and then abandoned it. Recently I picked it back up, converted everything to TypeScript, and used AI (Zenflow [1] + Claude Opus 4.6) to complete the remaining chapters. I provided the structure, direction, and initial chapters; the AI generated the bulk of the remaining content under a spec-driven workflow. The book covers roughly a first 1-2 year CS curriculum: sorting, dynamic programming, graph algorithms, trees, heaps, hash tables, and more. All code is executable, typed with generics/interfaces, and covered with tests. I've thoroughly reviewed several chapters (sorting, DP, graphs) and done a high-level pass on the rest. Currently in beta — corrections and contributions are welcome. MIT licensed. Inspired by Wirth's "Algorithms and Data Structures", SICP, and CLRS. Code and tests: https://ift.tt/fNtIWVz [1] https://ift.tt/PpFYfKq http://amoilanen.github.io/Algorithms-with-Typescript/ March 13, 2026 at 02:15AM