title: Generating random unique sequences in Java
body: <p>I have an array of numbers, let's say for example it's</p>
  
  <pre><code>[1, 3, 5, 7, 9]
  </code></pre>
  
  <p>It is possible to generate 5! that is 120 unique sequences of these numbers. For example</p>
  
  <pre><code>1 3 5 7 9
  5 1 3 9 7
  7 3 9 5 1
  1 7 9 5 3
  ... and so forth
  </code></pre>
  
  <p>I need to generate 10 of these sequences randomly, with no duplicates. Any suggestions would be much appreciated.</p>