Aw drat. I was going to submit the n'th prime problem until I saw this.
Sadly, I see there are too few test cases, and the problem is too easy to cook.
why 'nthprime' not allowed?
Another great problem!
This solution doesn't use any of the built-in MATLAB functions primes() or isprime(). It works for all integers N > 0, and requires only (N^0.75) iterations.
I do not know how the size are computed. Would someone please tell me?. Thanks in advance.
See https://au.mathworks.com/matlabcentral/about/cody/#solve_problems for basic concept. The best way to figure out the details is from experience — just try different alternatives.
Create an n-by-n null matrix and fill with ones certain positions
Vectors counting by 2
Find out sum and carry of Binary adder
Find the Best Hotels
Make a random, non-repeating vector.
Project Euler: Problem 3, Largest prime factor
Getting the indices from a vector
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