title: How to find every possible way to add up a number?
body: <p>Say I have an integer. Any integer. Arbitrary example: <code>6</code>.</p>
  
  <p>Is there a clean way to do perhaps a mesh grid of every possible way to get to <code>6</code> in a certain range?</p>
  
  <p>Say <code>1-9</code>.</p>
  
  <p>If I have <code>6</code>, how can I get an array of <code>5+1, 2+4, 3+3, 9-3, 7-1, 8-2</code>, etc.?</p>
  
  <p>Perhaps the output could look like</p>
  
  <p><code>[5,1],[2,4],[3,3],[9,3]</code> etc</p>
  
  <p>Really any way is fine, I can mess around with the output after I figure out a way to actually go about returning that type of function.</p>