1. Introduction
What is LeetCode?
LeetCode is one of the world’s most trusted platforms for improving coding skills through real-world algorithm problems. It offers a structured way to practice Data Structures, Algorithms, and system design techniques that are widely used in top tech interviews and software development roles.
Whether you are preparing for FAANG-level interviews or simply strengthening your logical thinking, LeetCode provides a powerful environment to sharpen your problem-solving abilities.
Why Problem Solving Matters
Strong problem-solving skills are the foundation of becoming a great software engineer.
✔ Coding Interviews
Top companies evaluate your ability to understand problems, design optimal solutions, and think aloud clearly. Practicing structured problem-solving improves your speed, accuracy, and confidence during technical interviews.
✔ Real-World Development
Efficient algorithms and clean logic help you build scalable applications. You learn how to analyze performance, reduce bottlenecks, and write production-ready code.
✔ Algorithmic Thinking
You develop the mental frameworks to:
- break problems into smaller parts,
- identify patterns,
- select the right data structure,
- and reason about time/space complexity.
Problem-solving isn’t just about coding — it’s about thinking like an engineer.
What Learners Will Gain
This tutorial series is designed to transform how you approach coding challenges. After completing it, learners will gain:
✔ Strong Intuition
Understand why a solution works — not just how. Build deep mental models that help you solve unfamiliar problems.
✔ Pattern Recognition
Master common LeetCode patterns such as Sliding Window, Two Pointers, Binary Search, Backtracking, Greedy, DP, and more.
✔ A Repeatable Framework
Learn a step-by-step method for approaching any problem:
- restate the problem,
- analyze constraints,
- design brute-force solutions,
- optimize systematically,
- validate with examples.
✔ Hands-On Confidence
Solve problems faster and accurately with the ability to explain your thought process — a key requirement in coding interviews.
✔ Exposure to Real Interview Questions
Work with handpicked problems frequently asked in top product companies.
✔ Practice as You Learn
Mini-problems, checkpoints, and quick challenges are integrated throughout the course so you can apply concepts immediately.