title: how to convert a string value to integer without using Integer.parseInt()?
body: <p>I have this input like </p>
  
  <pre><code>String s = "6" , ss="99 , sss = "99999";
  </code></pre>
  
  <p>i need to store these values in an int reference variable ,
  without using Integer.parseInt</p>
  
  <p>any suggestion ? , no full code , just the hints ??</p>