回复：一个极具挑战的编程问题

There might be flaws in the following logic.  Just as a starting point for discussion.

Package is a class with a collection of Documents.

Package.Pages = sum of pages of all its Documents

The subroutine PackMax can be called recursively.

----------------------------

SendDocuments(MaxPagesPerPack, AllDocuments){

  while AllDocuments.Lenght > 0{

    package = PackMax(MaxPagesPerPack, AllDocuments)

    AllDocuments.Remove(Package.Documents)

    Send (Package)

  }

}

Package PackMax(maxPages, sourceDocuments) {

  ParentPackage = new Package(sourceDocuments[0]) 

  if ParentPackage.Pages = maxPages or sourceDocument.Length = 1

    return ParentPackage

  restDocuments = sourceDocument[1, ...]  // subset from 2end

  chileMaxPages = maxPages - ParentPackage.Pages

  childPackage1 = PackMax(childMaxPages, restDocuments)

  while childPackage1.Pages < childMaxPages{

    restDocuments = restDocuments[1, ....]

    childPackage2 = PackMax(childMaxPages, restDocuments)

    if childPackage2.Pages > childPackage1.Pages

      childPackage1 = childPackage2

  } 

  ParentPackage.Apend(childPackage1)

  return ParentPackage 

}

Start a new (parent) package from the document with most pages

if the package is not full, find a sub package with the most possible pages from the rest of documents that can fit into the parent package with the firs