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reverse_bits.py
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defget_reverse_bit_string(number: int) ->str:
"""
return the bit string of an integer
>>> get_reverse_bit_string(9)
'10010000000000000000000000000000'
>>> get_reverse_bit_string(43)
'11010100000000000000000000000000'
>>> get_reverse_bit_string(2873)
'10011100110100000000000000000000'
>>> get_reverse_bit_string("this is not a number")
Traceback (most recent call last):
...
TypeError: operation can not be conducted on a object of type str
"""
ifnotisinstance(number, int):
msg= (
"operation can not be conducted on a object of type "
f"{type(number).__name__}"
)
raiseTypeError(msg)
bit_string=""
for_inrange(32):
bit_string+=str(number%2)
number=number>>1
returnbit_string
defreverse_bit(number: int) ->str:
"""
Take in an 32 bit integer, reverse its bits,
return a string of reverse bits
result of a reverse_bit and operation on the integer provided.
>>> reverse_bit(25)
'00000000000000000000000000011001'
>>> reverse_bit(37)
'00000000000000000000000000100101'
>>> reverse_bit(21)
'00000000000000000000000000010101'
>>> reverse_bit(58)
'00000000000000000000000000111010'
>>> reverse_bit(0)
'00000000000000000000000000000000'
>>> reverse_bit(256)
'00000000000000000000000100000000'
>>> reverse_bit(-1)
Traceback (most recent call last):
...
ValueError: the value of input must be positive
>>> reverse_bit(1.1)
Traceback (most recent call last):
...
TypeError: Input value must be a 'int' type
>>> reverse_bit("0")
Traceback (most recent call last):
...
TypeError: '<' not supported between instances of 'str' and 'int'
"""
ifnumber<0:
raiseValueError("the value of input must be positive")
elifisinstance(number, float):
raiseTypeError("Input value must be a 'int' type")
elifisinstance(number, str):
raiseTypeError("'<' not supported between instances of 'str' and 'int'")
result=0
# iterator over [1 to 32],since we are dealing with 32 bit integer
for_inrange(1, 33):
# left shift the bits by unity
result=result<<1
# get the end bit
end_bit=number%2
# right shift the bits by unity
number=number>>1
# add that bit to our ans
result=result|end_bit
returnget_reverse_bit_string(result)
if__name__=="__main__":
importdoctest
doctest.testmod()