title: Convert AlphaNumeric To Numeric And Should Be An Unique Number
body: <p>I want to convert an alphanumeric<code>(string)</code> value to numeric(<code>int</code>).
  <code>alphanumeric</code> values like <code>'af45TR'</code>.
  I wanted that numeric<code>(int)</code> value should be <code>unique</code> and it should not go out of the size of <code>int</code> like <code>64, 32 bits</code>. How can i do that?.</p>