Zetamac and Mental Math for Quant Interviews: The Complete Guide
How to use Zetamac to prep for quant interview mental math tests at Optiver, Akuna Capital, and Flow Traders. 8-week plan, firm breakdowns, techniques.
Insights and guides for mastering technical interviews & DSA.
How to use Zetamac to prep for quant interview mental math tests at Optiver, Akuna Capital, and Flow Traders. 8-week plan, firm breakdowns, techniques.

CodeSignal vs HackerRank: the GCA is standardized and portable, HackerRank is company-built. Knowing which one you face changes how you should prep.
Elements of Programming Interviews vs Cracking the Coding Interview: difficulty gap, coverage, and when to use each for FAANG prep.

Beyond Cracking the Coding Interview review: 13 new pattern chapters, 100 annotated FAANG replays, and an honest look at what the book actually gets right.

Cracking the Coding Interview review for 2026: what CtCI still does well, where it's aged badly, and the gaps every candidate needs to fill.

The best free coding interview prep resources in 2026: Blind 75, NeetCode 150, LeetCode free tier, System Design Primer, and where free isn't enough.

The 8 best books to learn data structures and algorithms in 2026, ranked by level: Grokking, CTCI, EPI, CLRS, and the reading order that works.

The five best system design interview books ranked by when to read them, with honest assessments of what each teaches and where each stops.

The new grad FAANG interview timeline most candidates miss: recruiting windows, company cooldowns after rejection, and a 20-week phased prep plan.

Staff engineer interview prep is structurally different from senior. Learn the 12-week plan, behavioral story framework, and system design bar.

The 12-week senior engineer interview prep roadmap: DSA recalibration, system design, behavioral scope, and mocks. In the right order.

The 18-week software engineering internship interview prep roadmap: phases, milestones, and the communication habit most students skip entirely.

Two-week coding interview prep plan: 50 problems, 10 patterns, day-by-day schedule. What to study, what to skip, and how to know you're ready.
Heap and priority queue cheat sheet for coding interviews: complexities, array index formulas, Python/Java/C++/Go syntax, five patterns, three gotchas.

The greedy algorithm cheat sheet for coding interviews: two properties, six patterns with code, complexity table, and exactly when greedy fails.
The recursion and backtracking cheat sheet for coding interviews: templates, complexity tables, pruning patterns, and the bugs that get you rejected.

Templates, decision signals, and silent bugs for two pointers and sliding window. The pre-interview two pointers sliding window cheat sheet.

The binary tree cheat sheet you need before your interview: traversals, BST validation fix, DFS patterns, complexity, and the four bugs that end interviews.

Four patterns cover every string coding interview problem. ASCII anchors, complexity table, and the ten LeetCode problems you'll actually see.