title: String should not contain two consecutive forward slashes and does not end with a forward slash '/'
body: <p>I have a Regex to allow alphanumeric characters and does not allow special characters anywhere:</p>
  
  <p><strong>^[a-zA-Z0-9,.:\s\'\+()?][a-zA-Z0-9,-./:\s\'\+()?]*$</strong></p>
  
  <p>Now, I also need to restrict forward slash '/' at the last character of the string and the string should not contain two or more consecutive forward slashes anywhere.</p>
  
  <p>How can I do this?</p>