Write an algorithm that creates a Ragged Grid with four rows. The first row has 3 positions, the second row has 4 positions, the third row includes 6 positions, and the fourth row contains 1. You can modify the iArray ADT defined below or use any standard library to implement your algorithm.

class iArray():

def __init__(self, capacity, fillValue = None):

self._items = list()

for count in range(capacity):

self._items.append(fillValue)

def __len__(self):

return len(self._items)

def __str__(self):

return str(self._items)

def __iter__(self):

return iter(self._items)

def __getitem__(self, index):

return self._items[index]

def __setitem__(self, index, newItem):

self._items[index] = newItem