Algorithmica: Thinking in Steps, Proving in Bounds is a comprehensive guide to Design and Analysis of Algorithms (DAA) that strengthens logical reasoning, analytical thinking, and efficient problem-solving skills. It introduces readers to designing algorithms, evaluating performance, and selecting effective computational techniques.The book covers time and space complexity, asymptotic analysis, recurrence relations, sorting and searching, divide-and-conquer, greedy algorithms, dynamic programming, graph algorithms, backtracking, and branch and bound. Step-by-step explanations, worked examples, and illustrations make complex concepts easy to understand and apply.Designed for undergraduate computer science and engineering students, educators, and aspiring professionals, this book bridges theoretical foundations with practical problem-solving. It encourages readers to think critically, compare alternative solutions, and develop algorithms that are correct, efficient, and scalable.More than a textbook, Algorithmica cultivates an algorithmic mindset-transforming complex problems into structured solutions through logical thinking and computational efficiency.