# What should be the best approach for this algorithm? DFS or BFS? and why?

When planting flowers in a pot, it’s important to make sure
that whenever you water your plant any water that doesn’t
get absorbed by the roots drains out the bottom of the pot.
Otherwise, the water will pool in the bottom of the pot and

``````You recently decided to plant some flowers of your own,
and decided to fill the base of the pot with gravel. You've
decided to write code to verify whether water will
successfully drain out of the pot.
Using a 2D array to represent your pot, individual pieces of
gravel are notated with a 1 and empty spaces between
gravel are notated with a 0.
Example Pot #1:

[
[0, 1, 1, 1, 1],
[0, 1, 0, 0, 0],
[0, 0, 0, 1, 0],
[1, 1, 1, 1, 0],
[1, 0, 0, 1, 0],
]

Write a function to determine whether the water can fall
from the top row to the bottom, moving through the
spaces between the gravel. Taking the example pot from
above, you can see the posible path, which is marked by
replacing the relevant 0's with asterisks (*)

[
[*, 1, 1, 1, 1],
[*, 1, *, *, *],
[*, *, *, 1, *],
[1, 1, 1, 1, *],
[1, 0, 0, 1, *],
]

``````

Notice that the path includes both the top and bottom
rows.
Allowed moves:
The only moves allowed are up, down, left, and right.
Diagonals are not allowed.

``````Here are a few pots that don't drain properly, along with
explanations.

[
[1, 1, 1],
[1, 1, 0],
[1, 0, 0],
]

Explanation: The top row has no gaps

[
[1, 1, 1],
[1, 1, 0],
[1, 1, 1],
]

Explanation: The bottom row has no gaps
[
[1, 1, 1],
[1, 1, 0],
[1, 1, 1],
]
``````