Welcome to a brand-new chapter! So far we have mastered Permutations, Combinations and the basics of Probability. Now we step into the world of Statistics — the subject that helps us make sense of data and uncertainty in everyday life. What is Statistics? In simple words, Statistics is the science of collecting, organising, analysing, interpreting […]

In the previous post we learned conditional probability: how the chance of an event changes once we know that another event has happened. Bayes’ theorem takes the very next step. It lets us reverse a conditional probability, so that from an effect we can work backwards to its most likely cause. In this post we […]

Time complexity is one of the most important concepts in DSA. It tells us how the running time of an algorithm changes when the input size gets bigger (from 10 items → 100 → 10,000 → 1 million). Very simple idea: We want to know — “If the problem becomes 10× or 100× larger, does […]

🔑 Key Takeaway: Every good algorithm must be correct, finite, unambiguous, and efficient. In the previous post we understood what is an algorithm. Now let’s go one step deeper: How does an algorithm actually look? What are its essential characteristics? And how do real algorithms appear in practice? Properties of a Good Algorithm Computer scientists […]

If you’re starting your journey in programming or preparing for technical interviews, Data Structures and Algorithms (DSA) is the most important foundation you will ever build. DSA teaches you how to think efficiently, solve problems systematically, and write code that performs well even with large amounts of data. Quick fact: Almost every FAANG / top-tier […]

Data Structures and Algorithms (DSA) form the backbone of efficient software development, technical interviews at top companies, and competitive programming. This structured roadmap takes you from absolute basics to advanced topics used in real-world systems and high-level contests. Target Audience: College students • Job seekers • Competitive programmers • Self-learners Estimated Time: 4–9 months (with […]