title: How to access array inside an array?
body: <p>I have an array in the following format.</p>
  
  <pre><code>var arr = [[a,b],[a,c],[b,c]];
  </code></pre>
  
  <p>My problem is simply printing arr is giving a,b,a,c,b,c</p>
  
  <p>i was expecting, to iterate it and get single combo at a time.</p>
  
  <p>How is it possible to access it in </p>
  
  <blockquote>
    <p>a-b
    a-c
    b-c</p>
  </blockquote>