title: How to get a Substring from a String?
body: <p>I have a little question ,I have a NSString object
  (\n "1 Infinite Loop",\n "Cupertino, CA 95014",\n USA\n)</p>
  
  <p>and i want the substring present within 2nd double quote and first comma of 2nd double quote (Ex.Cupertino) from this string.(Note: My string is Dynamic)</p>
  
  <p>Till now I have used <code>stringByReplacingOccurrencesOfString</code>: and able to get "1InfiniteLoop""CupertinoCA95014"USA</p>
  
  <p>But still not able get Cupertino.</p>
  
  <p>Is any other method able to solve this problem?</p>