Python/maths/abs_min.py
Lewis Tian a4d68d69f1
bugfix: Add abs_max.py & abs_min.py empty list detection (#4844)
* bugfix: Add abs_max.py & abs_min.py empty list detection

* fix shebangs check
2021-10-06 22:06:49 +08:00

36 lines
646 B
Python

from __future__ import annotations
from .abs import abs_val
def abs_min(x: list[int]) -> int:
"""
>>> abs_min([0,5,1,11])
0
>>> abs_min([3,-10,-2])
-2
>>> abs_min([])
Traceback (most recent call last):
...
ValueError: abs_min() arg is an empty sequence
"""
if len(x) == 0:
raise ValueError("abs_min() arg is an empty sequence")
j = x[0]
for i in x:
if abs_val(i) < abs_val(j):
j = i
return j
def main():
a = [-3, -1, 2, -11]
print(abs_min(a)) # = -1
if __name__ == "__main__":
import doctest
doctest.testmod(verbose=True)
main()