Algorithmopedia

Algorithmopedia is your pocket companion for studying algorithms, data structures, and crushing coding interviews. Whether you are preparing for a FAANG screen, a startup take-home, or a university exam, Algorithmopedia gives you focused, well-organized content designed for daily practice.
Every feature is built around one goal: help you turn abstract theory into reflexes.
WHY Algorithmopedia?
Most prep resources are either firehoses of information or gamified distractions. Algorithmopedia sits in the middle. You get concise topic summaries, real interview problems, quiz drills, and clear progress tracking — all in a clean, focused interface engineered for tight study sessions.

LEARN THE CORE TOPICS

Dive into 18 carefully written topics spanning 12 categories: Arrays, Strings, Linked Lists, Trees, Graphs, Dynamic Programming, Sorting, Searching, Hashing, Greedy, Backtracking, and Bit Manipulation. Each topic includes a plain-English summary, key points, time and space complexity, and a Swift code sample to anchor the concept.

SOLVE INTERVIEW PROBLEMS

Practice on 20 hand-picked problems covering classic patterns: Two Sum, Longest Substring Without Repeating Characters, Detect Cycle in Linked List, Validate BST, Number of Islands, Coin Change, Longest Increasing Subsequence, Merge Intervals, Search in Rotated Array, Group Anagrams, Permutations, and more. Each problem includes a statement, example, progressive hint, full solution, and complexity analysis. Mark problems as solved or bookmark them for review.

TEST YOURSELF WITH QUIZZES

Run rapid-fire quizzes with 5, 10, 15, or 20 questions and choose Easy, Medium, Hard, or Mixed difficulty. Every question has an explanation so you learn from every mistake. Beat your high score, climb the XP ladder, and keep your streak alive.

INTERVIEW CONCEPTUAL QUESTIONS

Browse 15 classic conceptual interview questions — arrays vs linked lists, BFS vs DFS, amortized analysis, memoization vs tabulation, union-find, tries, Dijkstra vs Bellman-Ford, and more — with answers written like you would deliver them on a whiteboard.

TRACK YOUR PROGRESS

A statistics dashboard shows topics completed, problems solved, quiz high score, day streak, and total XP. Category breakdowns show exactly where you are strong and where to focus next. A difficulty breakdown visualizes Easy, Medium, and Hard progress at a glance.

DESIGNED FOR FOCUS

Immersive dark mode, animated gradients, smooth transitions, and a distraction-free side menu keep you in flow. No ads, no clutter, no noise. Adapted for all iPhone screen sizes, including compact devices. Show More