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I wrote code to calculate the 1000th prime number: http://dpaste.com/hold/640512/ . It works, but upon reviewing, I realized I do not know why. Specifically, the function that's determines primeness at line 20 is not in the "while loop" (lines 2329). What is causing or commanding "x + 2" in lines 25 or 29 to be fed back into the function at line 20? It also works if I put the function in after line 29 as a recursion http://dpaste.com/hold/640514/ . Would appreciate if someone could explain the mechanics of what's going on. Thanks a lot. I wrote code to calculate the 1000th prime number: http://dpaste.com/hold/640512/ . It works, but upon reviewing, I realized I do not know why. Specifically, the function that's determines primeness at line 20 is not in the "while loop" (lines 2329). What is causing or commanding "x + 2" in lines 25 or 29 to be fed back into the function at line 20? It also works if I put the function in after line 29 as a recursion http://dpaste.com/hold/640514/ . Would appreciate if someone could explain the mechanics of what's going on. Thanks a lot. @MIT 6.00 Intro Co…
 2 years ago
 2 years ago
I wrote code to calculate the 1000th prime number: http://dpaste.com/hold/640512/ . It works, but upon reviewing, I realized I do not know why. Specifically, the function that's determines primeness at line 20 is not in the "while loop" (lines 2329). What is causing or commanding "x + 2" in lines 25 or 29 to be fed back into the function at line 20? It also works if I put the function in after line 29 as a recursion http://dpaste.com/hold/640514/ . Would appreciate if someone could explain the mechanics of what's going on. Thanks a lot. I wrote code to calculate the 1000th prime number: http://dpaste.com/hold/640512/ . It works, but upon reviewing, I realized I do not know why. Specifically, the function that's determines primeness at line 20 is not in the "while loop" (lines 2329). What is causing or commanding "x + 2" in lines 25 or 29 to be fed back into the function at line 20? It also works if I put the function in after line 29 as a recursion http://dpaste.com/hold/640514/ . Would appreciate if someone could explain the mechanics of what's going on. Thanks a lot. @MIT 6.00 Intro Co…
 2 years ago
 2 years ago

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seanlernerBest ResponseYou've already chosen the best response.1
your prime test function is in the while loop on line 24 and 26. As for what causes your function to iterate, it is because you are using a while loop which will do whatever is in it while a condition is or is not met... does that make sense?
 2 years ago

afprattBest ResponseYou've already chosen the best response.0
Yeah, that does make sense, thanks a lot. I was thinking about lines 24 and 26 as checking the result of 20, but now I see what's going on.
 2 years ago

afprattBest ResponseYou've already chosen the best response.0
Further in view of this explanation, I see that the function at line 20 is superfluous, since all the action is taking place in the while loop. I deleted line 20 and it returns the correct answer.
 2 years ago
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