Problems on these two questions
Dave Angel
d at davea.name
Mon Nov 19 03:18:19 CET 2012
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
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