Application of Trees There are many applications for trees.One of the popular uses is the directory structure in many common operating systems. /usr* mark* alex* bi训* course* junk.c prog1.r prog2.r The root of this directory is /usr. ■ The asterisk next to the name indicates that /usr is itself a directory.mark* alex* bill* course* junk.c prog1.r prog2.r /usr* Application of Trees ◼ There are many applications for trees. One of the popular uses is the directory structure in many common operating systems. ◼ The root of this directory is /usr. ◼ The asterisk next to the name indicates that /usr is itself a directory