done

src/Task1.java

@@ -0,0 +1,27 @@
+package src;
+
+import java.util.Arrays;
+
+public class Task1 {
+    public static void main(String[] args)  {
+
+
+        int[] arrayNumbers = {3, 8, 5, 2, 7};
+        System.out.println("Array: " + Arrays.toString((arrayNumbers)));
+
+        int bValue = arrayNumbers[0];
+        int sValue = arrayNumbers[0];
+
+        for (int i = 1; i < arrayNumbers.length; i++)
+
+            if (arrayNumbers[i] > bValue) {
+
+                bValue = arrayNumbers[i];
+                System.out.println("Difference is : " + (bValue - sValue));
+
+            } else if (arrayNumbers[i] < sValue)
+                sValue = arrayNumbers[i];
+
+
+    }
+    }

src/Task2.java

@@ -0,0 +1,79 @@
+package src;
+
+public class Task2 {
+    public static void main(String[] args) {
+
+        int[] array = {3, 7, 4, 2, 6};
+        smallestAndSecondSmallest(array);
+
+    }
+
+    public static void smallestAndSecondSmallest(int[] arra) {
+
+        if (arra.length < 2) {
+            System.out.println("It should contain at least 2 elements !");
+
+        }
+
+        int smallest = arra[0];
+        int secondSmallest = Integer.MAX_VALUE;
+
+        for (int i = 1; i < arra.length;i++){
+            if (arra[i] < smallest) {
+                secondSmallest = smallest;
+                smallest = arra[i];
+            } else if (arra[i] < secondSmallest && arra[i] != smallest) {
+                secondSmallest = arra[i];
+
+            }
+        }
+
+        if (secondSmallest == Integer.MAX_VALUE) {
+            System.out.println("No second smallest element found.");
+        } else {
+            System.out.println("Smallest element: " + smallest);
+            System.out.println("Second smallest element: " + secondSmallest);
+
+
+        }
+    }}
+
+
+
+
+
+
+//        if (arr == null || arr.length < 2) {
+//            System.out.println("Array should have at least two elements.");
+//            return;
+//        }
+//
+//        int smallest = Integer.MAX_VALUE;
+//        int secondSmallest = Integer.MAX_VALUE;
+//
+//        for (int i = 0; i < arr.length; i++) {
+//            if (arr[i] < smallest) {
+//                secondSmallest = smallest;
+//                smallest = arr[i];
+//            } else if (arr[i] < secondSmallest && arr[i] != smallest) {
+//                secondSmallest = arr[i];
+//            }
+//        }
+//
+//        if (secondSmallest == Integer.MAX_VALUE) {
+//            System.out.println("No second smallest element found.");
+//        } else {
+//            System.out.println("Smallest element: " + smallest);
+//            System.out.println("Second smallest element: " + secondSmallest);
+//        }
+//    }
+//
+//    public static void main(String[] args) {
+//        int[] array = {3, 5, 1, 4, 2, 6};
+//        findSmallestAndSecondSmallest(array);
+//
+
+
+
+
+

src/Task3.java

@@ -0,0 +1,26 @@
+package src;
+
+public class Task3 {
+    public static double mathTask(double x, double y) {
+
+
+
+        double firstExp = Math.pow(x, 2);
+        double secondExp = Math.pow((4 * y / 5) - x, 2);
+        return firstExp + secondExp;
+
+    }
+
+    public static void main(String[] args) {
+
+        double x = 3.0;
+        double y = 7;
+        double result = mathTask(x, y);
+        System.out.println("Result is : " + result);
+
+
+
+    }
+
+    }
+