Question

from typing import List

THREE_BY_THREE = [[1, 2, 1],
[4, 6, 5],
[7, 8, 9]]

FOUR_BY_FOUR = [[1, 2, 6, 5],
[4, 5, 3, 2],
[7, 9, 8, 1],
[1, 2, 1, 4]]

UNIQUE_3X3 = [[1, 2, 3],
[9, 8, 7],
[4, 5, 6]]

UNIQUE_4X4 = [[10, 2, 3, 30],
[9, 8, 7, 11],
[4, 5, 6, 12],
[13, 14, 15, 16]]

def get_average_elevation(elevation_map: List[List[int]]) -> float:
"""Return the average elevation across all cells in the elevation map
elevation_map.

Precondition: elevation_map is a valid elevation map.

>>> get_average_elevation(UNIQUE_3X3)
5.0
>>> get_average_elevation(FOUR_BY_FOUR)
3.8125
"""

pass # remove this line when you implement this function

Answer 1

SOURCE CODE IN PYTHON:

#Return the average elevation across all cells in the elevation map elevation_map.
def get_average_elevation(elevation_map):
total=0 #to store total of all elevations
count=0 #to store count of cells
#iterating through all the cells
for row in range(len(elevation_map)):
for col in range(len(elevation_map[row])):
total+=elevation_map[row][col] #adding elevation to total
count+=1 #incrementing count of cells
return total/count #returning average

#testing method
UNIQUE_3X3=[[1,2,3],[9,8,7],[4,5,6]]
FOUR_BY_FOUR=[[1,2,6,5],[4,5,3,2],[7,9,8,1],[1,2,1,4]]
print(get_average_elevation(UNIQUE_3X3))
print(get_average_elevation(FOUR_BY_FOUR))

OUTPUT: