Calculating the maximum difference between two adjacent numbers in an array

Question

Recently I've been assigned a task which asks to me to "calculate the maximum difference between two adjacent numbers in the array that is passed to it". I'm fairly new to Java (I have only done VB in the past) and since this topic was not well explained to me, I'm not quite sure how to go about it.

Here is some additional information about the task itself:

The function has to pass the following test. The function maxDiff should calculate the maximum difference between two adjacent numbers in the array that is passed to it.

@Test
public void assessmentTest() {
 int [] numbers = {12, 8, 34, 10, 59};
 assertEquals(49, maxDiff(numbers));
 int [] numbers2 = {-50, 100, 20, -40};
 assertEquals(150, maxDiff(numbers2));
}

Answer 1

You must assure to take the absolute difference, don't forget it. That's why I used the Math.abs() function.

public static int maxDiff(int[] numbers) {
      int diff = Math.abs(numbers[1] - numbers[0]);
      for(int i = 1; i < numbers.length-1; i++)
          if(Math.abs(numbers[i+1]-numbers[i]) > diff)
              diff = Math.abs(numbers[i+1] - numbers[i]);
      return diff;
}