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Python/maths/binomial_coefficient.py at Write-for-current-Python · davgit/Python · GitHub
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Python
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maths
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binomial_coefficient.py
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binomial_coefficient.py
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def
binomial_coefficient
(
n
,
r
):
"""
Find binomial coefficient using pascals triangle.
>>> binomial_coefficient(10, 5)
252
"""
C
=
[
0
for
i
in
range
(
r
+
1
)]
# nc0 = 1
C
[
0
]
=
1
for
i
in
range
(
1
,
n
+
1
):
# to compute current row from previous row.
j
=
min
(
i
,
r
)
while
j
>
0
:
C
[
j
]
+=
C
[
j
-
1
]
j
-=
1
return
C
[
r
]
print
(
binomial_coefficient
(
n
=
10
,
r
=
5
))
You can’t perform that action at this time.
