Feat/add bhupendra profile

profiles/BHUPENDRArocxx.md

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+# BHUPENDRArocxx
+### Location
+India
+### Academics
+ARMY INSTITUTE OF TECHNOLOGY , PUNE 
+AUTOMATION AND ROBOTICS ENGG.
+### Interests
+- Web Development (React, JavaScript)
+- Game Development
+- Algorithms
+### Projects
+- [Games Hub Contribution](https://github.com/BHUPENDRArocxx/Games-Hub-HacktoberFest-2025) Simple mini-games created with React.
+- [Hacktober 2025 Algorithms](https://github.com/BHUPENDRArocxx/hbtuHacktoberfest2025) Collection of algorithms and utilities.
+### Profile Link
+[BHUPENDRArocxx](https://github.com/BHUPENDRArocxx)

scripts/factorial_recursive_BHUPENDRArocxx.java

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+// LANGUAGE: Java
+// ENV: JDK
+// AUTHOR: BHUPENDRArocxx
+// GITHUB: https://github.com/BHUPENDRArocxx
+
+class Factorial {
+    public static long calculateFactorial(int n) {
+        if (n < 0) {
+            return -1; // Factorial not defined for negative numbers
+        }
+        // Base case: factorial of 0 or 1 is 1
+        if (n == 0 || n == 1) {
+            return 1;
+        }
+        // Recursive step
+        return n * calculateFactorial(n - 1);
+    }
+
+    public static void main(String[] args) {
+        int number = 5;
+        long result = calculateFactorial(number);
+
+        if (result != -1) {
+            System.out.println("Factorial of " + number + " is: " + result);
+        } else {
+            System.out.println("Invalid input.");
+        }
+    }
+}