Answer Happy

Arranging boxes in chronological order along the floor.
While it’s easy for you to walk around and read a date on the
outside of any heavy box, you’d like to actually move as few boxes
as possible. The office is nearly full: there is only enough extra
space to hold any one of the file boxes, but not two. You can’t
stack the boxes and you can’t move more than one at a time, and you
of course cannot magically duplicate the boxes. Which sorting
algorithm should you use?
Selection sort
Insertion sort
Mergesort
Quicksort