🔁 Understanding Recursion

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What is Recursion?

Recursion is a fundamental concept in programming where a function calls itself to solve smaller instances of a problem. While it may seem abstract, recursion is all around us—from navigating nested folders on your computer to opening Russian dolls.

Real-World Analogies

🗂️ File Explorer: When a file system scans all directories and subdirectories, it uses recursion to "drill down" into folders.
🪆 Russian Dolls: You open a doll, and inside there's another... until you reach the last one. Each doll opens itself recursively.

Why Use Recursion?

The beauty of recursion lies in its elegance. Instead of manually looping, recursion expresses repetition naturally—especially in algorithms like tree traversal, parsing, and combinatorics.

🧮 Interactive: Recursive Factorial Calculator

Enter a number to compute n! using recursion:

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