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| From | Dave Angel <davea@davea.name> |
| Subject | Re: Combination Function Help |
| Date | Wed, 12 Feb 2014 13:38:15 -0500 (EST) |
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Show key headers only | View raw
kjakupak@gmail.com Wrote in message:
> def choices(n, k):
> if k == 1:
> return n
> if n == k:
> return 1
> if k == 0:
> return 1
> return choices(n - 1, k) + choices(n - 1, k - 1)
> print ("Total number of ways of choosing %d out of %d courses: " % (n, k))
>
> n = int(input("Number of courses you like: "))
> k = int(input("Number of courses you can register for: "))
> choices(n, k)
>
> Changed it like you said, didn't work
>
I see at least two problems with that code
:
The line with the print function will never get called, since it
follows an unconditional return statement. You shouldn't print
there anyway, just move it to top level, after the two calls to
input. Don't forget to dedent it.
You don't use or save the return value of choices. You should
probably assign it to a name like combinations, then print it on
the following line.
The recursive function choices doesn't look right to me, but I'm
not sure either way. I have not tested it.
--
DaveA
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Combination Function Help kjakupak@gmail.com - 2014-02-12 07:20 -0800
Re: Combination Function Help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-12 15:40 +0000
Re: Combination Function Help kjakupak@gmail.com - 2014-02-12 07:56 -0800
Re: Combination Function Help Joel Goldstick <joel.goldstick@gmail.com> - 2014-02-12 11:21 -0500
Re: Combination Function Help John Ladasky <john_ladasky@sbcglobal.net> - 2014-02-12 08:24 -0800
Re: Combination Function Help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-12 16:55 +0000
Re: Combination Function Help Dave Angel <davea@davea.name> - 2014-02-12 13:38 -0500
Re: Combination Function Help kjakupak@gmail.com - 2014-02-12 14:59 -0800
Re: Combination Function Help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-02-12 23:15 +0000
Re: Combination Function Help Dave Angel <davea@davea.name> - 2014-02-12 18:22 -0500
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