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Python/maths/3n+1.py at master · githuba/Python · GitHub
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3n+1.py
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master
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3n+1.py
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def
main
():
def
n31
(
a
):
# a = initial number
c
=
0
l
=
[
a
]
while
a
!=
1
:
if
a
%
2
==
0
:
#if even divide it by 2
a
=
a
//
2
elif
a
%
2
==
1
:
#if odd 3n+1
a
=
3
*
a
+
1
c
+=
1
#counter
l
+=
[
a
]
return
l
,
c
print
(
n31
(
43
))
print
(
n31
(
98
)[
0
][
-
1
])
# = a
print
(
"It took {0} steps."
.
format
(
n31
(
13
)[
1
]))
#optional finish
if
__name__
==
'__main__'
:
main
()
You can’t perform that action at this time.
