We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. Ruby
  3. Methods
  4. Ruby - Methods - Introduction
  5. Discussions

Ruby - Methods - Introduction

  • phamthanhnghia_1
     + 0 comments
    def prime?(num)
  return false if num <= 1
  (2..Math.sqrt(num).to_i).none? { |n| num % n == 0 }
end