Thread: can you please run this code and tell me the result?

Hello everyone.
Struggling with this java assignment:
Given an array of numbers, every even number in array is distance traveled, every odd number is time traveled. Need to find total distance traveled. Basically need to multiply [0] and [1], [2] and [3] in array and so on, and get the total.

import java.util.*;
 
public class MyClass {
  public static int odometer(int [] travel) {
 
    int N = travel.length;
    int distancePerHour = 0;
    int distanceTotal = 0;
        for (int i = 0; i < N; i += 2) {
	   distancePerHour = travel[i] * travel[i + 1];
	   distanceTotal += distancePerHour;
	   }
	return distanceTotal;
    }
 
public static void main(String[] args) {
 
	int [] testarr  = {20,2,30,6,10,7};
	System.out.println(odometer(testarr));	
	}
}

So the result im getting is 20*2 + 30*6 + 10*7 = 290
However when i upload this to test server, it returns 170 ! Seems like it's only multiplies last 2 elements of the array. Need second opinion whether my code is working correctly. Many thanks.

Result:

290

Process finished with exit code 0

Think again about this time numbers, what exactly it means :

speed..check_at
20....... 0:00 pm start, with 20 mph
30....... 2:00 pm speed changed at
10....... 6:00 pm speed changed at
... ....... 7:00 pm end at

total time of travel: 7h !