How do you return the total number of even items in non-null 2d arrays of data and return 0 if data is null or empty and how do you return the total number of odd items in non-null 2d arrays of data and return 0 if data is null or empty. I cannot use inbuilt libraries or hardcode any of the questions.

public int totalNumberOfEvenItems(int[][] data) { return 0; //to be completed }

public int totalNumberOfOddItems(int[][] data) { return 0; //to be completed }