input: Write a function to generate a two-dimensional array filled with zeros given the number of rows and columns. Return the generated array.
  def generate_zeros_array(row,col):
      return [[0] * col for _ in range(row)]
  
  assert generate_zeros_array(3,3) == [[0, 0, 0], [0, 0, 0], [0, 0, 0]]
  assert generate_zeros_array(2,4) == [[0, 0, 0, 0], [0, 0, 0, 0]]
  assert generate_zeros_array(1,1) == [[0]]
  assert generate_zeros_array(0,0) == []
output: def generate_zeros_array(row, col):
      return [[0] * col for _ in range(row)]