Converting Roman Numerals to Integers with String Manipulation

Solving algorithmic challenges involving Roman numerals is a classic milestone for developers preparing for technical interviews. To tackle these problems efficiently, you must understand how to parse strings systematically and apply conditional subtraction rules. This text-based course guides you through the foundational logic and clean implementation strategies required to write robust conversion algorithms. You will learn how to break down complex strings, handle edge cases, and write optimized code that stands up to interviewer scrutiny. By the end of this course, you will confidently implement Roman-to-integer algorithms and explain your architectural choices under pressure. What you'll learn: - Understand the core mathematical principles and subtraction rules of the Roman numeral system - Parse strings sequentially to identify and process numerical characters efficiently - Implement conditional logic to handle subtractive pairs like IV, IX, and XC - Apply modern clean coding practices and type hints to ensure your solution is readable and maintainable - Write unit tests to verify your algorithm against standard inputs and complex boundary cases - Analyze the time and space complexity of your string manipulation code We begin with essential definitions and the mathematical foundation of Roman numerals before moving step-by-step through algorithm design, code implementation, and optimization techniques. This course is designed for beginner developers and interview candidates with basic programming knowledge who want to sharpen their problem-solving skills. Start reading today to master this fundamental coding interview pattern.