My backwards logic
denismfmcmahon at gmail.com
Sat Sep 6 09:49:49 CEST 2014
On Fri, 05 Sep 2014 12:48:56 -0400, Seymore4Head wrote:
> But, what this instructions want printed is "This is a prime number"
> So how to I use this code logic NOT print (not prime) and have the logic
> print "This number is prime"
This is an algorithmic question, not a python question, so the answer is
to write out the steps you would follow to determine that a number is
prime, and then write that code.
Note also that when searching for factors of a number n, and starting at
2, you can generally stop at somewhere around n/3, as the only possible
factor of n greater than n/2 is n, and 2 is probably the first value you
tested. This can speed things up.
Denis McMahon, denismfmcmahon at gmail.com
More information about the Python-list