title: Get all keys of nsdictionary sorted alphabetically in swift?
body: <p>I have got a NSDictionary with alphabets as keys. I want to get those keys sorted alphabetically . I have tried many methods but I am getting error on Sort() method. Can any one help me ???? </p>
  
  <p>Thanks in advance</p>
  
  <p>Note:
   1) I don't want to get a sorted array of dictionaries 
   2) I don't want to sort the dictionary by means of the values
  (I am getting a lot of answers for this )</p>