title: How to pair vectors with different lengths?
body: <p>I have two vectors with different lengths:</p>
  
  <pre><code> a=[1 2 3 4 5 6 7 8 9 10]
   b=[1 2 3 4 5]
  </code></pre>
  
  <p>Is there a way to match and combine them like this random combination?</p>
  
  <pre><code>        A    B
          1    2
          2    3
          3    5
          4    3
          5    2
          6    1
          7    3
          8    5
          9    2 
          10   1
  </code></pre>