Re: Problems on these two questions

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Date	Sun, 18 Nov 2012 21:18:19 -0500
From	Dave Angel <d@davea.name>
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Subject	Re: Problems on these two questions
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On 11/18/2012 08:52 PM, su29090 wrote:
> I all of the other problems but I have issues with these:
>
> 1.Given a positive integer  n , assign True to  is_prime if  n has no factors other than  1 and itself. (Remember,  m is a factor of  n if  m divides  n evenly.) 

if is_a_prime(n):
    is_prime = True

Now all you have to do is write is_a_prime().  if you get stuck, please
show us what you've got, and what the problem is with it.  And as usual,
tell us what version of Python you're writing in, if any.

> 2.An  arithmetic progression is a sequence of numbers in which the distance (or difference) between any two successive numbers if the same. This in the sequence  1, 3, 5, 7, ... , the distance is 2 while in the sequence  6, 12, 18, 24, ... , the distance is 6. 
>
>  Given the positive integer  distance and the positive integer  n , associate the variable  sum with the sum of the elements of the arithmetic progression from  1 to  n with distance  distance . For example, if  distance is 2 and  n is  10 , then  sum would be associated with  26 because  1+3+5+7+9 = 25 . 

Don't call it 'sum' since that's a built-in function.  Coincidentally,
it's a function that takes an iterable, and calculates the sum of its
elements.  Sounds useful, no?  The other thing you might want is xrange,
which takes a start value, and end value, and a distance value.

>
> Thanks in advance.

You never responded to any of the messages in the other thread.  But
Chris's advice was good, and better worded than mine.  Pick a problem,
make an attempt, then ask for help.

-- 

DaveA

Thread

Problems on these two questions su29090 <129km09@gmail.com> - 2012-11-18 17:52 -0800
  Re: Problems on these two questions Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-11-19 02:09 +0000
  Re: Problems on these two questions su29090 <129km09@gmail.com> - 2012-11-18 18:15 -0800
    Re: Problems on these two questions Dave Angel <d@davea.name> - 2012-11-18 21:33 -0500
  Re: Problems on these two questions Dave Angel <d@davea.name> - 2012-11-18 21:18 -0500
  Re: Problems on these two questions Chris Angelico <rosuav@gmail.com> - 2012-11-19 13:23 +1100
  Re: Problems on these two questions Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-11-19 18:15 -0500
    Re: Problems on these two questions Neil Cerutti <neilc@norwich.edu> - 2012-11-20 15:02 +0000
  Re: Problems on these two questions Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-11-19 18:16 -0500
  Re: Problems on these two questions Dave Angel <d@davea.name> - 2012-11-19 20:52 -0500
  Re: Problems on these two questions Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-19 23:32 -0700

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