Deep Topic Taxonomy

• Purpose: one-figure map of the repo's bridge and deep algorithm surface
• Scope: high-value bridge pages plus deep and breadth lanes that shape retrieval
• Last reviewed: 2026-04-26
• Companion pages: Learning Areas, Route Map, Algorithm Gap Roadmap

This page is for taxonomy, not learning order.

Use it when you want to answer one of these quickly:

• what bridge and deep families already exist in the repo
• which topics belong to the same endgame cluster
• where one hard lane sits relative to its nearby siblings

How To Read The Figure

• each card is one branch of the repo's bridge-plus-deep surface
• items inside a card are grouped by family, not by difficulty
• bridge pages such as Bit Tricks, Monotonic Stack / Queue, and GCD / LCM appear when they glue multiple harder lanes together
• compare-note surfaces such as Balanced BSTs still appear when they are part of the repo's retrieval story

Scope Notes

• the figure still omits first-wave basics such as sorting, binary search, prefix sums, and similar early patterns
• it now includes a few textbook-breadth lanes when they already exist in the repo and affect the public taxonomy, such as B-Trees, Skip Lists, Regex / Finite Automata, and Quantum Algorithms
• if you want the full learner-facing map instead of this bridge-plus-deep slice, use Learning Areas