Python/maths/abs.py at master · TheAlgorithms/Python · GitHub

Name: Python/maths/abs.py at master · TheAlgorithms/Python · GitHub
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"""Absolute Value."""


defabs_val(num: float) ->float:
"""
 Find the absolute value of a number.

 >>> abs_val(-5.1)
 5.1
 >>> abs_val(-5) == abs_val(5)
 True
 >>> abs_val(0)
 0
 """
return-numifnum<0elsenum


defabs_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
 """
iflen(x) ==0:
raiseValueError("abs_min() arg is an empty sequence")
j=x[0]
foriinx:
ifabs_val(i) <abs_val(j):
j=i
returnj


defabs_max(x: list[int]) ->int:
"""
 >>> abs_max([0,5,1,11])
 11
 >>> abs_max([3,-10,-2])
 -10
 >>> abs_max([])
 Traceback (most recent call last):
 ...
 ValueError: abs_max() arg is an empty sequence
 """
iflen(x) ==0:
raiseValueError("abs_max() arg is an empty sequence")
j=x[0]
foriinx:
ifabs(i) >abs(j):
j=i
returnj


defabs_max_sort(x: list[int]) ->int:
"""
 >>> abs_max_sort([0,5,1,11])
 11
 >>> abs_max_sort([3,-10,-2])
 -10
 >>> abs_max_sort([])
 Traceback (most recent call last):
 ...
 ValueError: abs_max_sort() arg is an empty sequence
 """
iflen(x) ==0:
raiseValueError("abs_max_sort() arg is an empty sequence")
returnsorted(x, key=abs)[-1]


deftest_abs_val():
"""
 >>> test_abs_val()
 """
assertabs_val(0) ==0
assertabs_val(34) ==34
assertabs_val(-100000000000) ==100000000000

a= [-3, -1, 2, -11]
assertabs_max(a) ==-11
assertabs_max_sort(a) ==-11
assertabs_min(a) ==-1


if__name__=="__main__":
importdoctest

doctest.testmod()

test_abs_val()
print(abs_val(-34)) # --> 34