title: Generate a specific array in ruby
body: <p>Is there a way to easily generate this array in Ruby?</p>
  
  <pre><code>[[-5,'-5'],[-4,'-4'],[-3,'-3'],[-2,'-2'],[-1,'-1'],[1,'1'],[2,'2'],[3,'3'],[4,'4'],[5,'5']]
  </code></pre>
  
  <p>Basically, it contains 10 elements from -5 to 5 with an integer key and string value.</p>