title: How to delete repeated elements from array keeping the order unchanged in python?
body: <p>I have sequence of integer elements in array "a" ,given below  </p>
  
  <pre><code>a=[2,1,5,4,8,4,2,1,2,4,8,6,1,5,4,87,62,3]  
  </code></pre>
  
  <p>I need the output like  </p>
  
  <pre><code>output=[2,1,5,4,8,6,87,62,3] 
  </code></pre>
  
  <p>I tried the built-in functions like <code>set</code> or <code>unique</code> but it arrange the<br>
  resulting sequence in ascending order, I want to keep the order unchanged. </p>
  
  <p>Can anyone help?</p>