feat: Add two-pointer method to reverse an array in-place

🧠 Logic:
- Introduced `ReverseTheArray(int[] arr)` method using two pointers (`p1` at start, `p2` at end).
- Swap elements at `p1` and `p2` and move both pointers towards the center.
- This reverses the array efficiently in O(n) time and O(1) space.

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

Author: Someshdiwan

Section9ArrayAB/Array 2.0/src/RotateTheArrayTwoPointer.java

@@ -1,10 +1,9 @@
 public class RotateTheArrayTwoPointer {
-    public static void ReverseTheArray(int[] arr)
-    {
+    public static void ReverseTheArray(int[] arr) {
         int p1 = 0;
         int p2 = arr.length - 1;
-        while(p1 < p2)
-        {
+
+        while(p1 < p2) {
             int temp = arr[p1];
             arr[p1] = arr[p2];
             arr[p2] = temp;