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k_closest_stars.py
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k_closest_stars.py
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import functools
import math
from typing import Iterator, List
from test_framework import generic_test
from test_framework.test_utils import enable_executor_hook
class Star:
def __init__(self, x: float, y: float, z: float) -> None:
self.x, self.y, self.z = x, y, z
@property
def distance(self) -> float:
return math.sqrt(self.x**2 + self.y**2 + self.z**2)
def __lt__(self, rhs: 'Star') -> bool:
return self.distance < rhs.distance
def __repr__(self):
return str(self.distance)
def __str__(self):
return self.__repr__()
def __eq__(self, rhs):
return math.isclose(self.distance, rhs.distance)
def find_closest_k_stars(stars: Iterator[Star], k: int) -> List[Star]:
# TODO - you fill in here.
return []
def comp(expected_output, output):
if len(output) != len(expected_output):
return False
return all(
math.isclose(s.distance, d)
for s, d in zip(sorted(output), expected_output))
@enable_executor_hook
def find_closest_k_stars_wrapper(executor, stars, k):
stars = [Star(*a) for a in stars]
return executor.run(functools.partial(find_closest_k_stars, iter(stars),
k))
if __name__ == '__main__':
exit(
generic_test.generic_test_main('k_closest_stars.py',
'k_closest_stars.tsv',
find_closest_k_stars_wrapper, comp))