help! writing afunction for isprime

2 次查看（过去 30 天）
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.

请先登录，再回答此问题。

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.
  2 个评论
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

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by