Upload files to "OOP/Java/Lab/Week12"

OOP/Java/Lab/Week12/ArrayExchange.java

@@ -0,0 +1,46 @@
+public class ArrayExchange {
+
+    public static <T> void swapElements(T[] array, int pos1, int pos2) {
+        T temp = array[pos1];
+        array[pos1] = array[pos2];
+        array[pos2] = temp;
+    }
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.print("Enter number of elements: ");
+        int size = scanner.nextInt();
+        scanner.nextLine(); // consume newline
+
+        String[] array = new String[size];
+
+        // Get array elements from user
+        for (int i = 0; i < size; i++) {
+            System.out.print("Enter element " + i + ": ");
+            array[i] = scanner.nextLine();
+        }
+
+        System.out.println("\nOriginal array: ");
+        for (String element : array) {
+            System.out.print(element + " ");
+        }
+
+        System.out.print("\nEnter first position to swap: ");
+        int pos1 = scanner.nextInt();
+
+        System.out.print("Enter second position to swap: ");
+        int pos2 = scanner.nextInt();
+
+        swapElements(array, pos1, pos2);
+
+        System.out.println(
+            "\nArray after swapping positions " + pos1 + " and " + pos2 + ": "
+        );
+        for (String element : array) {
+            System.out.print(element + " ");
+        }
+
+        scanner.close();
+    }
+}