Reordering pages in a PDF document on iOS

To reorder pages in a PDF document by reversing the order of pages.

Given the copy and delete page operations described in other sections, it is easy to re-arrange and sort pages.

PTPDFDoc *doc = [[PTPDFDoc alloc] initWithFilepath: filename];

int page_num = [doc GetPageCount];
for (int i=1; i<=page_num; ++i)
{
  PTPageIterator *itr = [doc GetPageIterator: i];
  PTPage *page = [itr Current];
  [doc PageRemove: itr];
  [doc PagePushFront: page];
}

Merge, copy, delete, and rearrange PDF pages
Full code sample which illustrates how to copy pages from one document to another, how to delete, and rearrange pages and how to use ImportPages().