help! writing afunction for isprime

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mustafa aladhami
mustafa aladhami 2016-9-23
评论： George 2016-9-24
i'm not sure how to write this since i'm new to matlab!
Write a function that receives a number n and determine if it is a prime number (output 1) or not (output 0). You can not use the ‘isprime’ function.

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回答（1 个）

George
George 2016-9-24
Do you know how to test whether a number is prime? Here is one way you can start:
  1. Generate numbers between 2:(n/2)
  2. Test if n is divisible by any of those numbers (eg mod())
  3. Return appropriately based on #2.
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Walter Roberson
Walter Roberson 2016-9-24
You do not need to go as far as n/2, you can stop at sqrt() of the number

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