feat: Rotate array left by one position and print before and after

🧠 Logic:
- Define an array of integers.
- Print the original array using a helper method.
- Rotate the array left by one:
  - Store the first element temporarily.
  - Shift all other elements one position to the left.
  - Place the first element at the end of the array.
- Print the rotated array to observe the change.

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

Author: Someshdiwan

Section9ArrayAB/Array IMP/ArrayRotator.java

@@ -0,0 +1,38 @@
+public class ArrayRotator {
+    private static final String DELIMITER = ", ";
+
+    public static void main(String[] args) {
+        int[] numbers = {3, 9, 7, 8, 12, 6, 15, 5, 4, 10};
+
+        printArray(numbers);
+        rotateArrayLeft(numbers);
+        printArray(numbers);
+    }
+
+    public static void rotateArrayLeft(int[] array) {
+        if (array == null || array.length <= 1) {
+            return;
+        }
+
+        int temp = array[0];
+        for (int i = 1; i < array.length; i++) {
+            array[i - 1] = array[i];
+        }
+        array[array.length - 1] = temp;
+    }
+
+    private static void printArray(int[] array) {
+        if (array == null || array.length == 0) {
+            System.out.println("[]");
+            return;
+        }
+
+        for (int i = 0; i < array.length; i++) {
+            System.out.print(array[i]);
+            if (i < array.length - 1) {
+                System.out.print(DELIMITER);
+            }
+        }
+        System.out.println();
+    }
+}