Interview Question for Software Development Engineer In Test at Microsoft:

create a recursive function that would return the list of documents from a folder..

It'd go something like (ya sorry for the bad coding standard here)

function ListofDocuments SearchFolder(folder name)
   var tempDocuments = new ListofDocuments();
   For each folder in current folder
      tempDocuments =+ SearchFolder(thisFolder)
   Loop
   tempDocuments += get documents from current folder
   return tempDocuments
End

Now run:
print SearchFolder("C:\")