Data Structures and Algorithms (DSA) form the foundation of every coding interview. Whether you are preparing for product-based companies or strengthening your problem-solving skills, understanding the logic and approach behind each problem is more important than memorizing solutions.
On this page, you will find a collection of DSA problems explained with visual animations to help you understand how each algorithm works internally. We will cover problems from Arrays, Strings, Mathematics, Searching, Sorting, Recursion, and more, with a strong focus on step-by-step logic, algorithm explanation, and time–space complexity analysis.
Each problem is broken down into simple steps using animated visuals, making complex concepts easier to grasp for beginners while still being valuable for intermediate and advanced learners. This resource is designed to help you build strong fundamentals, think logically, and confidently crack coding interviews.
Math coding problems
Two Sum Leetcode problem is one of the most asked question in Data Structure and Analysis ( DSA ) interviews. […]
Swapping two variables may look like a beginner-level problem, but many candidates still fail this question during coding interviews cause […]