Write a function ShowPrimes(n) that will find all prime numbers between 1 and n and return them as a vector. Do this using a for loop. Hint: use isprime(x) to check whether x is a prime number. As an example, >> primes=ShowPrimes(20) primes =

7 次查看（过去 30 天）
Caitlin Schmidt
Caitlin Schmidt 2019-6-23
回答： infinity 2019-6-23
I'm having some issues with this problem. So far, I have written:
function vec=ShowPrimes(n)
%Creates a vector of all of the prime numbers in a range of 1 to n
%Format:ShowPrimes(n)
for i=1:n
vec(i)=isprime(i);
end
end
This gives me a logical vector, but I need a vector of all the prime numbers. How should I go about fixing my function?

请先登录，再回答此问题。

采纳的回答

infinity
infinity 2019-6-23
Hello,
The idea is that you use isprime to check is this prime or not.
Then, if it is the prime, you store the value of "i" (not isprime(i)) to the output.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Discrete Math 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