Question

I have to write this in Java, but i've never even learned it before and i'm completely lost

Answer 1

Answer:

private void printArray(int[] arr){   //0

  System.out.print("[");   //1

  for(int k : arr){   //2

     System.out.print(k + ", ");   //3

  }

  System.out.println("]");   //4

}

Explanation:

This method should get you started. Your teacher may want a different format or a different type of loop. If you haven't learned for loops yet don't use them that'd be suspicious ;)

What I did:

0: This is the method heading with one parameter for the 1D array. If you need to access it in a different class change private to public.

1: This prints the [ with no line break

2: This is an enhanced for loop to iterate through each element in a 1D array. Alternatively, a normal for loop looks like this:

for (int i = 0; i < arr.length; i++)

instead of retrieving the variable with the enhanced for, you'd have to use arr[i] instead of k in this scenario.

3: This prints the value in each pass of the loop along with a comma and a space.

4: This adds the ] with a line break when the loop is completed

Hope this helps you get started :D comment if you need further help