Python/maths/average_median.py
imp af0810fca1
[mypy] Fix type annotations for maths (#4617)
* Fix mypy errors for armstrong_numbers.py

* Fix mypy errors for harmonic_series.py

* Fix mypy errors for average_median.py
2021-08-18 12:45:07 +02:00

40 lines
685 B
Python

from typing import Union
def median(nums: list) -> Union[int, float]:
"""
Find median of a list of numbers.
Wiki: https://en.wikipedia.org/wiki/Median
>>> median([0])
0
>>> median([4, 1, 3, 2])
2.5
>>> median([2, 70, 6, 50, 20, 8, 4])
8
Args:
nums: List of nums
Returns:
Median.
"""
sorted_list = sorted(nums)
length = len(sorted_list)
mid_index = length >> 1
return (
(sorted_list[mid_index] + sorted_list[mid_index - 1]) / 2
if length % 2 == 0
else sorted_list[mid_index]
)
def main():
import doctest
doctest.testmod()
if __name__ == "__main__":
main()