Data Structures & Algorithms

Everything you need to get hired — concepts, C/C++ code, and interview-style Q&A for every core DSA topic.

What is DSA?

▸DSA stands for Data Structures & Algorithms. A data structure is a way of organizing and storing data so it can be accessed and modified efficiently. An algorithm is a step-by-step procedure that operates on that data to solve a problem.
▸Together, they form the core toolkit of computer science — every app you use (search engines, maps, social feeds, databases) is built on choosing the right data structure and the right algorithm for the job.
▸Learning DSA well means you can look at a problem and reason about how to store the data and how to process it efficiently — not just write code that 'works' for a small input.