Excel Column to RXCY Conversion in C++ | Strings, Regex & Base-26 Explained | DSA скачать в хорошем качестве

Excel Column to RXCY Conversion in C++ | Strings, Regex & Base-26 Explained | DSA

In this video, we solve a classic Excel column conversion problem using C++, where we convert between: Excel format → AB12 RXCY format → R12C28 This problem is widely asked in coding interviews, competitive programming, and DSA practice, as it tests your understanding of strings, regular expressions, and the base-26 number system. 🔍 What You’ll Learn in This Video: How Excel column numbering works internally Converting Excel column letters to numbers (Base-26 logic) Converting RXCY format back to Excel format Using regex in C++ for strict format validation Writing clean, readable, and interview-ready C++ code 🧠 Concepts Covered: C++ Strings Regular Expressions (Regex) Base-26 Number Conversion Input/Output Optimization DSA Logic Building