note description : "Application for tree traversal demonstration" output : "[ Prints preorder, inorder, postorder and levelorder traversal of an example binary tree. ]" author : "Jascha GrĂ¼bel" date : "$2014-01-07$" revision : "$1.0$" class APPLICATION create make feature {NONE} -- Initialization make -- Run Tree traversal example. local tree:NODE do create tree.make (1) tree.set_left_child (create {NODE}.make (2)) tree.set_right_child (create {NODE}.make (3)) tree.left_child.set_left_child (create {NODE}.make (4)) tree.left_child.set_right_child (create {NODE}.make (5)) tree.left_child.left_child.set_left_child (create {NODE}.make (7)) tree.right_child.set_left_child (create {NODE}.make (6)) tree.right_child.left_child.set_left_child (create {NODE}.make (8)) tree.right_child.left_child.set_right_child (create {NODE}.make (9)) Io.put_string ("preorder: ") tree.print_preorder Io.put_new_line Io.put_string ("inorder: ") tree.print_inorder Io.put_new_line Io.put_string ("postorder: ") tree.print_postorder Io.put_new_line Io.put_string ("level-order:") tree.print_levelorder Io.put_new_line end end -- class APPLICATION