feat: Demonstrate array mutability by modifying array through function call

🧠 Logic:
- Passes an array `nums` to a method `change`.
- The method modifies `arr[0] = 99`.
- Since arrays are reference types in Java, the original array is modified.
- Prints the array before and after the change to illustrate the effect.

📌 Highlights that Java passes object references by value, so modifications inside functions affect the original array.

Signed-off-by: Somesh diwan <[email protected]>

Author: Someshdiwan

Section9ArrayAB/Array IMP/PassinginFunctions.java renamed to Section9ArrayAB/Array IMP/PassingFunctions.java

@@ -1,6 +1,6 @@
 import java.util.Arrays;
 
-public class PassinginFunctions {
+public class PassingFunctions {
     public static void main(String[] args) {
         int[] nums = {3, 4, 5, 12};
         System.out.println(Arrays.toString(nums));