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algorithms/string/add_binary.py at master · AlexSenchenko/algorithms · GitHub
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algorithms
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add_binary.py
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algorithms
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add_binary.py
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"""
Given two binary strings,
return their sum (also a binary string).
For example,
a = "11"
b = "1"
Return "100".
"""
def
add_binary
(
a
,
b
):
s
=
""
c
,
i
,
j
=
0
,
len
(
a
)
-
1
,
len
(
b
)
-
1
zero
=
ord
(
'0'
)
while
(
i
>=
0
or
j
>=
0
or
c
==
1
):
if
(
i
>=
0
):
c
+=
ord
(
a
[
i
])
-
zero
i
-=
1
if
(
j
>=
0
):
c
+=
ord
(
b
[
j
])
-
zero
j
-=
1
s
=
chr
(
c
%
2
+
zero
)
+
s
c
/=
2
return
s
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