title: How to square an array of numbers in ruby without `map` or `collect` methods?
body: <p>This is code I currently have</p>
  
  <pre><code>def square_array(array)
      array.each do |i|
        i ** 2
      end
  end
  </code></pre>
  
  <p>I know it's not correct, could someone explain this process to me please?</p>