How to use the course
Watch the lesson, review the key ideas below, and attempt the reference problems before opening their solutions. The learning happens when you write code, make mistakes, and correct your reasoning.
Foundations
Introduction
Build a structured interview-practice loop around patterns, data structures, and clear reasoning.
Lesson 1/19
Practice
Reference problems
0/2 solved
Notes
Lesson text
This course builds a practical foundation for coding interviews. It focuses on recognizing problem shapes, choosing useful data structures, and applying each lesson to reference problems on impol.dev.
Recognize recurring patterns instead of memorizing hundreds of solutions.
Move from complexity and core structures into trees, graphs, dynamic programming, greedy methods, bits, and design.
Watch each lesson, then write code and solve its reference problems yourself.
What to expect
No course can guarantee a job, and videos alone are not enough. This path gives you the concepts and practice structure needed to prepare deliberately and explain your decisions clearly.