title: how to sort nsmutablearray in ascending order with time comparison
body: <p>i have time array of type nsmutablearray. and i want to sort this array in ascending time order . these are objects in array</p>
  
  <pre><code>         "9:30" at index 0
           "8:30" at index 1
           "8:45" at index 2
           "6:45" at index 3
           "7:30"  at index 4
  
  and i want to sort this time array like this order
  
           "6:45" at index 0
           "7:30" at index 1
           "8:30" at index 2
           "8:45" at index 3
           "9:30" at index 4
  </code></pre>
  
  <p>i have waste my whole day on preparing algorithm but can't succeeded</p>