Build the DSA skills you need.
One focused session at a time.
Stop jumping between random coding problems. DSA⁴⁰⁴ gives you a personalized daily roadmap, pattern-based learning, and true progress tracking.
DSA⁴⁰⁴
Your coding system
Day 22 of 120
Wednesday · Day 22
Today's Mission
Build confidence with one focused session.
Arrays & Hashing
Your momentum
Endless problem lists don't teach you how to think.
Most students fail technical interviews not because they didn't solve enough problems, but because they practiced them randomly across disconnected platforms.
- No clear path: You don't know what topic to study next.
- Memory fading: You forget previously studied patterns.
- Lost consistency: You miss a day and give up completely.
The Cycle of Frustration
1. Random Practice
2. Forget Concepts
3. Unclear Progress
4. Start Over
A structured system that builds true mastery.
DSA⁴⁰⁴ turns scattered DSA preparation into a structured, measurable learning journey. We tell you what to learn, what to practice, and what to revise.
Before DSA⁴⁰⁴
- Random practice
- No clear roadmap
- Forgotten concepts
- Unclear progress
With DSA⁴⁰⁴
- Structured daily plan
- Topic-based curriculum
- Automated review queue
- Measurable learning habit
Four steps to consistency
Get a personalized plan
Choose your experience level and goal. Set your pace (e.g., 2 or 3 problems a day).
Learn in the correct sequence
The roadmap guides you from Arrays to Dynamic Programming without skipping fundamentals.
Solve and track
Open your daily workspace, solve curated problems, and check them off your list.
Review weak areas
Problems you flag are added to a review queue to ensure you actually retain the patterns.
Everything you need to succeed
A complete toolkit for the modern computer science student and interview candidate.
Beginner-to-advanced progression.
Follow a meticulously designed topic order that builds dependencies correctly. Understand Hashing before Two Pointers, and Trees before Graphs.
Today's Mission
Open the app and see exactly what to do today: current topic, problem checklist, and your active streak.
Socratic guidance.
Get hints, review approaches, and explain mistakes without revealing the full code.
Track real mastery.
Visualize completion trends, topic strengths, streaks, and upcoming milestones.
Integrated Editor.
Filter problems, write code, run test cases, and save notes directly within the platform.
Public Portfolio.
Showcase your consistency with GitHub-style heatmaps and share your DSA progress publicly.
Stay Consistent.
Never miss a day with web push notifications, platform announcements, and daily email reminders.
Your Environment.
Connect Codeforces, LeetCode, and personalize your sync preferences and notification schedules.
Sync Competitions.
Automatically track and sync upcoming coding competitions from LeetCode, Codeforces, CodeChef, and AtCoder in one unified calendar.
Guilt-Free Catch-Up.
Missed a day? Our dedicated backlog system safely queues missed problems and allows you to seamlessly shift your entire schedule forward.
Install Anywhere.
Install DSA⁴⁰⁴ as a native progressive web app on your desktop or mobile device. Complete with Android APK support.
Stay Consistent. Compete Smarter.
Powerful analytics, unified leaderboards, and scheduled reminders to keep you on track.
Daily Problem Emails
Receive a clear daily reminder with the problems planned for your next focused practice session.
Benefit: Know exactly what to solve without opening multiple tools or losing your routine.
Contest Reminders
Track upcoming coding contests and configure reminders so you can prepare and participate on time.
Benefit: Never miss an important contest because you forgot the schedule.
Unified Coding Ratings
Connect supported coding platforms and view your competitive-programming ratings in one profile.
Benefit: Understand your progress without checking every platform separately.
Cross-Platform Ranking
Compare your ranking and performance across supported coding platforms from one unified dashboard.
Benefit: See your overall competitive position and identify where to improve.
A unified learning environment
Sliding Window
Day 14 • 3 Problems • Medium Difficulty
14 Day Streak
Topic Mastery
A proven path from zero to interview-ready.
Foundations & Arrays
Two Pointers & Sliding Window
Linked Lists & Stacks
Trees & Binary Search
Graphs & Networks
Dynamic Programming
Advanced Patterns & Contests
Comprehensive Platform Integration
Who should use DSA⁴⁰⁴?
Beginners
Stop feeling overwhelmed. Follow a clear, curated path from language basics to advanced structures without guessing.
Interview Candidates
Focus strictly on high-yield patterns. Use spaced repetition to revise weak areas before the big day.
Inconsistent Learners
Rebuild your habit. The platform auto-adjusts your schedule if you miss a day, preventing backlog anxiety.
Frequently Asked Questions
Install DSA404 directly from Google Chrome
Get the full native application experience on Android, Windows, Mac, or iOS. Launch directly from your home screen or desktop with zero browser clutter and ultra-fast loading.
This app runs directly inside your Google Chrome browser as a PWA. When selecting "Install app" in Chrome menu, it installs as a full standalone Application on your device (not a browser shortcut widget), requiring no APK file downloads.
1-Click Chrome Install
Install directly from your browser without file downloads.
Daily Practice Alerts
Never break your streak with background push reminders.
Native App Frame
Full screen mode tuned specifically for mobile DSA practice.
Fast & Lightweight
Launches in milliseconds using cached PWA web tech.
DSA⁴⁰⁴ App
Chrome PWA AppReady to master Data Structures?
Join the structured learning platform that actually teaches you how to think, step by step.