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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
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