Array of N prime numbers
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Leandro Cavalheiro
on 26 Jun 2016
Commented: Gangga Fardede
on 30 Oct 2017
Hello. I'm new to MatLab. I've just written a code to identify if a given number N is a prime number.
Basically, that's it:
function [out] = myIsPrime(n)
if n == 1
out = 0;
elseif n == 2
out = 1;
elseif all(rem(n,2:n-1) ~= 0)
out = 1;
else
out = 0;
end
end
Now I want my output to be the first 'N' prime numbers counting from 2 and up.
I've been trying for hours but my brain is just frozen. How do I do that using if, for or while loops?
1 Comment
Gangga Fardede
on 30 Oct 2017
I want to ask, how to make a row, if we input number, the output will display prime number have a lot of n Like we input '4' abd will dispay '2 3 5 7'
Accepted Answer
Walter Roberson
on 26 Jun 2016
while the count of primes found is less than your target count, keep trying the next number in sequence to determine whether it is prime; if it is then increment the count of primes found and store the prime in your array.
3 Comments
Walter Roberson
on 26 Jun 2016
num_primes_found = num_primes_found + 1;
list_of_primes(num_primes_found) = the_candidate_number;
To store only N numbers, use a while loop on num_primes_found
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