CodeMonkey vs Hanmadi

Algorithms Arena is a game-shaped data structures and algorithms course for technical interviews and computer science study. WATCH, PREDICT, PERFORM Every lesson is powered by a deterministic execution trace. Scrub through the animation, predict the next operation, then take control of the board and perform each compare, swap, visit, or table update yourself. A COMPLETE PATTERN ROADMAP Study 17 chapters spanning Big-O, arrays and hashing, two pointers, sliding windows, stacks and queues, binary search, linked lists, trees, tries, heaps, backtracking, graphs, dynamic programming, greedy algorithms, intervals, and bit manipulation. BUILD INTERVIEW INTUITION Use daily five-minute drills scheduled from the skills that need review. Learn to recognize patterns, assemble approaches, find edge cases, check invariants, and call time and space complexity under pressure. RACE BIG-O Compare growth curves, rank complexity classes, test an operation budget, and run capped native benchmarks on your own Apple device. USE YOUR OWN DATA Supply a bounded array, graph edge list, or string. Bundled offline algorithms generate a fresh visual trace locally—your input is data, never downloaded code. MORE WAYS TO MASTER THE MATERIAL • 280 enriched seven-stage lessons • 900 animated traces across 100 canonical algorithms • 1,600 interview drills across six formats • 480 four-language complexity cases • CodeBuild token exercises and 17 chapter boss battles • Per-pattern ranks, XP, streaks, streak freezes, and crowns • Sorting Gallery and optional Game Center leaderboards • Pseudocode, Swift, Python, and JavaScript listings • Apple Pencil scratch layer on iPad and keyboard controls on Mac PRIVATE BY DESIGN Algorithms Arena has no account, no advertising, no analytics, and no tracking. Course content and progress stay on your device. The complete course works offline. One universal app for iPhone, iPad, and Mac. SUBSCRIPTION AND TERMS Pro is available as a monthly or annual auto-renewable subscription, with a seven-day annual trial for eligible new subscribers. A lifetime purchase is also available. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in your Apple Account subscription settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.lukekevinmclaughlin.com/privacy

Hanmadi is a drill for Korean vocabulary. It shows one word at a time. You say whether you remembered it, and spaced repetition decides when you see it again. WHAT IS INSIDE - All 5,965 words of the Korean Learners Vocabulary List published by the National Institute of the Korean Language, sorted into Beginner (982), Intermediate (2,111) and Advanced (2,872) - An English meaning for almost every word, and the part of speech for every word - The hanja for the 3,262 words that have one, shown on the back of the card - A Listen button that reads the word aloud with the Korean voice on your device - Spaced repetition with six boxes; words you miss come back in the same session - Progress by level, and a day count you are free to ignore NO STREAK TRAPS There is no energy to run out and no streak to lose. Miss a day and nothing is taken away from you. FREE AND PAID Free gives you the first 300 words of Beginner, with every feature. One purchase unlocks the rest of the 5,965 words. It is a one-time purchase, not a subscription. OFFLINE Everything runs on your device. No account, no sign-in, and nothing is sent anywhere. MENU LANGUAGES English, Japanese, Simplified Chinese and Spanish. Word meanings are in English. DATA The word list, the part of speech and the grade come from the Korean Learners Vocabulary List (한국어 학습용 어휘 목록), published in 2003 by the National Institute of the Korean Language, used under the Korea Open Government Licence Type 1. English meanings and some hanja come from kengdic by Joe Speigle, used under the Mozilla Public License 2.0. The grades are those of the 2003 list, not TOPIK levels, and this app is not affiliated with or endorsed by the organisers of the TOPIK.