The Coding Interview
Reference Hub
Six deep-dive references covering everything you need the night before — or the morning of — your interview. Complexity tables, syntax for C++/Java/Python, essential snippets, math, problem-solving frameworks, and debugging hacks.
6
Reference Guides
3
Languages (C++/Java/Python)
20+
Essential Snippets
100%
Free Forever
Complexity Guide
Input constraints → required Big-O. Data structure ops table, sorting complexity, recurrence relations, Master Theorem, and how to estimate in an interview.
Syntax Cheatsheet
Arrays, strings, maps, sets, stacks, queues, heaps, trees, graphs — C++, Java, Python side by side with common operations, time complexities, and gotchas.
Code Snippets
GCD, LCM, fast exponentiation, XOR tricks, bit manipulation, Sieve, Union-Find, Trie, Kadane's, Dutch flag, next permutation — all 3 languages, production-quality.
Math for DSA
Modular arithmetic, number theory, combinatorics, bit manipulation, powers of 2, logarithm rules, series formulas, overflow prevention — everything math you need.
Problem Approach
The complete interview playbook: 5-step framework, pattern recognition table, brute→optimal optimization ladder, DP/Greedy decision guides, what to say out loud.
Debug & Hacks
Debug checklist, most common DSA bugs, dry-run template, edge case checklist, interview hacks, print-debug snippets, and secrets no one tells you.
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