O(1) Daily — DSA & System Design Prep

O(1) Daily — Your Structured DSA & System Design Prep System

Preparing for software engineering interviews shouldn't mean randomly solving LeetCode problems, jumping between courses, and constantly wondering what to study next.

O(1) Daily is a structured, AI-powered interview preparation system designed to help you build strong DSA problem-solving skills through consistent, guided practice.

Instead of giving you another list of problems, O(1) Daily gives you a clear daily path:

Learn → Practice → Reflect → Review

What you'll get

🎯 Structured Daily Study Plans

Get focused 60–180 minute study sessions based on your current level, topic, and available time.

🧩 Pattern-Based DSA Learning

Learn to recognize the underlying patterns behind problems instead of memorizing individual solutions.

💻 Guided Problem Solving

Work through problems independently with progressive hints that help you discover the solution without immediately giving it away.

🧠 Problem-Solving Frameworks

Learn how to approach unfamiliar problems, break them down, identify constraints, choose the right data structure, and reason about complexity.

🔁 Spaced Repetition

Revisit important problems and concepts using a 1 → 3 → 7 → 14 day review cycle to improve long-term retention.

📝 Mistake-Driven Learning

Turn every struggle into a learning opportunity by recording where you got stuck, what you missed, and what pattern should have triggered.

🏗️ System Design Preparation

Build your understanding of scalable systems alongside your DSA preparation, rather than treating System Design as an afterthought.

Who is this for?

O(1) Daily is for developers and software engineers who:

• Want a structured DSA + System Design routine
• Struggle with consistency in interview preparation
• Know basic DSA but struggle with unfamiliar problems
• Want to improve pattern recognition and problem-solving
• Don't know what to study next
• Are preparing for software engineering interviews

The goal

You don't need to solve hundreds of problems without understanding them.

You need to develop the ability to look at a new problem and think:

What is the pattern?

What is the invariant?

What data structure fits?

How can I prove my approach works?

What are the edge cases?

O(1) Daily is designed to help you build that ability through deliberate, consistent practice.

One focused session at a time. One pattern at a time. One day at a time.