title: Count the similarly degree between two names based on characters?
body: <p>are there any way to evaluate the similarity between the two names? As data is like below:</p>
  <pre><code>ABC  ABCD
  
  CBD  CBD 
  
  ABC  DEF
  </code></pre>
  <p>the result may be like</p>
  <pre><code>ABC  ABCD   (3/4=) 75%
  
  CBD  CBD    (3/3=) 100%
  
  ABC  DEF    (0/6=) 0%
  </code></pre>
  <p>also, the order of the character doesn't matter</p>