Return the lowest even number from a 2D array of positive integers. If there are no even numbers, return -1.

Important Note: Copy the following two methods into the window and don't change 
array2DLowestEvenNumber.  CodingBat does not allow 2D array parameters, so this method is 
accepting the number of rows, number of columns, and a 1D array.  The first method takes this 
information and creates a 2D array named nums that you will be using. Enter your code into 
method array2DLowestEvenNumberB:

public int array2DLowestEvenNumber(int rows, int cols, int[] array)
{
	int[][] array2D = new int[rows][cols];
	int idx = 0;
	for (int r=0; r<rows; r++)
	{
		for (int c=0; c<cols; c++)
		{
			array2D[r][c] = array[idx];
                        idx++;
		}
	}
	return array2DLowestEvenNumberB(array2D);
}

public int array2DLowestEvenNumberB(int[][] nums) {

}