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LoveMathFermat Group Title

Hello! I just finished the very first problem on problem set 1 thanks to you guys. What do you think of the code I wrote? I am a starter. I would like to know if I am on the right direction or developing some bad habit. Any advice would be greatly appreciated candidates=range(3,10000,2) prime=() i=0 while (i<4999): x = 2 dec=0 while (x<candidates[i]): if candidates[i]%x == 0: x=x+1 dec=dec+1 else: x=x+1 if dec>0: i=i+1 else: prime=prime+(candidates[i],) i=i+1 print prime[998] and I got the right answer which is 7919. Thanks in advance!

  • one year ago
  • one year ago

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  1. snark Group Title
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    hey - it's nice.... you can speed and clean it a little: candidates = range(3, 10000, 2) prime = [] # i have no real reason to choose a list -[]-over a tuple-(), maybe faster i = 0 while i < 4999: ....x = 2 ....dec = 0 ....while x <= candidates[i] // 2: # can't be > candidates[i]/2 ........if candidates[i] % x == 0: ............dec = dec + 1 ........x = x + 1 # this is done in any case.... ....if dec == 0: # saves an else ........prime.append(candidates[i]) # this is where list maybe faster- []- instead of () ....i = i + 1 # could write i += 1, same thing.but is always done here print (prime[998]) of course, your code is good - it works! There's not even a whole nit to pick on... ( how do you get indents to work here? )

    • one year ago
  2. rsmith6559 Group Title
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    One thing that you'll regret in a month or two is that some of your variable names aren't too descriptive, and there aren't any comments. FWIW, I've been writing my comments first to frame out my functions.

    • one year ago
  3. LoveMathFermat Group Title
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    Thank you guys! I really appreciate your advice! To snark, I just copied and pasted the code directed from python. It should work for you !

    • one year ago
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