title: Unique Sort how to implement this
body: <p>Rahul has found a new and unique way of sorting the arrays.</p>
  
  <p>If the array is not sorted, he would remove the first or the second half of the array and he keeps on doing this process unless the array is completely sorted.</p>
  
  <p>Your task is to find out the largest sorted array that can be obtained from the given unsorted array.</p>