https://abhisinghal.github.io/dsa-master-reference Java-native DSA interview reference — patterns, canonical problems, animations, and interview-realism content for senior/staff engineers. en-us Sat, 24 Oct 2026 10:08:49 GMT 1440 https://abhisinghal.github.io/dsa-master-reference/appendix/changelog.html#2026-08-27-wave-9-205-205-problem-pages-elevated-to-star-quality dsa-master-reference-2026-08-27-Wave 9: 205/205 problem pages elevated t Thu, 27 Aug 2026 12:00:00 GMT

Two or three worked examples covering edge cases (empty, single, adversarial).

**Drama numbers** in the constraint line — the naive approach's TLE spelled out at concrete scale versus the canonical improvement.

A numbered `## Approach 1 — Brute …` with full working code, complexity, and an explicit "then what's better" transition.

Italicised *"Say aloud in an interview: …"* commentary on the canonical approach that maps it back to the algorithmic family.

A complexity ladder table marking the canonical solution in bold.

]]> https://abhisinghal.github.io/dsa-master-reference/appendix/changelog.html#2026-08-26-wave-8-flagship-canonical-walkthroughs dsa-master-reference-2026-08-26-Wave 8: Flagship canonical walkthroughs Wed, 26 Aug 2026 12:00:00 GMT

Union Find, Topological Sort, Greedy, and Divide & Conquer each got a full brute → intermediate → optimised flagship problem embedded in the chapter (`79afd41`).

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All 35 SVGs pass a fresh WCAG-AA audit; all 21 animations covered by global reduced-motion CSS; Playwright a11y suite added and green (`e7004fa`).

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Ten remaining chapters got a hand-written `## History` paragraph (Bellman 1952 for DP, Floyd 1967 for tortoise & hare, Bentley's JDK binary-search bug, etc.). Coverage now 21/21 (`629b040`).

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Every chapter carries ≥ 8 highlighted insights (3 keys + 3 traps + 2 invariants) with explicit interview-day triggers (`a70ca5c`).

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Ten chapters rewritten to open with a "you-scene" + naive attempt + tension teaser instead of a definition (`c39f372`).

]]> https://abhisinghal.github.io/dsa-master-reference/appendix/changelog.html#2026-08-26-wave-3-interactive-vue-components dsa-master-reference-2026-08-26-Wave 3: Interactive Vue components Wed, 26 Aug 2026 12:00:00 GMT

Six new user-driven anim components shipped: `PrefixSumAnim`, `HashingAnim`, `MergeIntervalsAnim`, `TopoSortAnim`, `GreedyAnim`, `BitManipAnim`. All theme-token-driven, screen-reader friendly, respect `prefers-reduced-motion` (`9a0f1cd`).

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Ten chapters got the missing four sections (Why exists / When / When not / Templates / Traps). Four anemic chapters (Binary Search, BS on Answer, Bit Manip, Quickselect) grew from ~2.5k to ~4.5k words each (`2db68c6`).

]]> https://abhisinghal.github.io/dsa-master-reference/appendix/changelog.html#2026-08-21-wave-b1-b3-reader-navigation-additions dsa-master-reference-2026-08-21-Wave B1+B3 reader navigation additions Fri, 21 Aug 2026 12:00:00 GMT

New "How this book compares" page versus Grokking, NeetCode, TakeUForward, and LeetCode Premium.

New public changelog page so readers can see substantive project changes without reading git history.

Landing page now links directly to the comparison page.

Foundations sidebar now exposes the comparison page near the Java foundations chapters.

Appendix sidebar now exposes the changelog.

]]> https://abhisinghal.github.io/dsa-master-reference/appendix/changelog.html#2026-08-21-content-consolidation-and-grokking-style-expansion dsa-master-reference-2026-08-21-Content consolidation and Grokking-style Fri, 21 Aug 2026 12:00:00 GMT

Consolidated the repository to the latest `gen/src/` content source.

Expanded all 21 pattern chapters with a more consistent mentor-style rhythm.

Strengthened pattern chapters with recognition cues, when-not-to-use guidance, canonical problems, traps, and interview framing.

Large chapter updates landed across Sliding Window, Two Pointers, Dynamic Programming, Backtracking, Graphs, Trees, Arrays, Strings, and the remaining pattern/data-structure chapters.

Preserved the Java-native focus while making the problem explanations more self-contained.

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Initial VitePress site and GitHub Actions deployment pipeline added.

PDF pipeline added for the offline reference format.

21 core pattern chapters introduced, from Sliding Window through Quickselect, plus bonus Math and Design chapters.

Java Data Structures Primer, Java DSA Gotchas, Complexity Model, Debugging DSA Code, and Zero-to-Hero Roadmap added as foundations.

Data-structure deep dives added for arrays, strings, linked lists, stacks/queues, trees, heaps, tries, graphs, and segment/Fenwick trees.

Appendix chapters added: cheat sheets, self-check drills, master problem index, practice solutions, mock interview transcripts, and traps catalog.

Java 17 is the default implementation language throughout the reference.

Core idea established: pattern-first DSA prep for senior/staff interviews.

Java-native explanations and templates chosen over language-agnostic pseudocode.

Problem chapters organized around brute force → optimized reasoning → trace → complexity → traps.

Callout vocabulary introduced for key ideas, invariants, traps, pattern connections, notes, and definitions.

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