Create 9b. Sum of array elements

Week 3: Objects, files and exceptions/9b. Sum of array elements

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+Write the method
+
+int sum(int[] numbers)
+
+which calculates and returns the array's elements sum.
+
+Example method call:
+public static void main(String[] args){
+    int[] array = {1,2,3,4};
+
+    int sum = sum(array);
+    System.out.println("Sum: " + sum);
+}
+
+Program outputs:
+Sum: 10
+
+
+
+
+=============
+
+
+
+import java.util.Random;
+import java.util.Arrays;
+
+public class Test {
+    public static void main(String[] args) {
+        final Random r = new Random();
+        
+        
+        for (int test = 1; test <= 3; test++) {
+            System.out.println("Test " + test);
+            
+            int length = r.nextInt(5) + 5;
+            int[] array = new int[length];
+            for (int i = 0; i < length; i++) {
+                array[i] = r.nextInt(10) + 1;
+            }
+            
+            System.out.println("Array: " + Arrays.toString(array));
+            System.out.println("Sum: " + sum(array));
+            System.out.println("");
+        }
+    }
+
+
+
+
+    public static int sum(int[] numbers){
+        int sum = 0;
+        for (int num : numbers) {
+            sum += num;
+        }
+        return sum;
+    }
+
+    
+}
+
+
+
+Test 1
+Array: [6, 2, 3, 10, 3, 9, 5, 1]
+Sum: 39
+
+Test 2
+Array: [1, 6, 10, 8, 10, 8, 3, 1]
+Sum: 47
+
+Test 3
+Array: [9, 7, 6, 4, 6, 8]
+Sum: 40
+
+
+
+
+