title: how to convert any number of list to between 0 and 1
body: <p>For example :</p>
  
  <p>I have the number of list like below : {12,23,34,45,65} to change between 0 and 1 like 
  {0, 0.2, 0.4, 0.6, 0.8}. Does any body know some algorithm?</p>