remove node

You have problems, and we're glad to hear them. Explain the problem, what you have tried, and where you got stuck.
Feel free to share a little info on yourself and the course.
Forum rules
Please respect your teacher's guidelines. Homework is a learning tool. If we just post answers, we aren't actually helping. When you post questions, be sure to show what you have tried or what you don't understand.

remove node

Postby omarasl » Sat Dec 15, 2012 11:49 am

hello every body ,
Actually , I found functions which use to remove node from binary tree
these are the functions :

(defun BST-remove (B E)
"Remove E from BST B."
(if (BST-empty-p B)
(if (bin-tree-leaf-p B)
(BST-leaf-remove B E)
(BST-node-remove B E))))

(defun BST-leaf-remove (L E)
"Remove E from BST leaf L."
(if (= E (bin-tree-leaf-element L))

(defun BST-node-remove (N E)
"Remove E from BST node N."
((elmt (bin-tree-node-element N))
(left (bin-tree-node-left N))
(right (bin-tree-node-right N)))
(if (<= E elmt)
(if (bin-tree-leaf-p left)
(if (= E (bin-tree-leaf-element left))
(make-bin-tree-node elmt (BST-node-remove left E) right))
(if (bin-tree-leaf-p right)
(if (= E (bin-tree-leaf-element right))
(make-bin-tree-node elmt left (BST-node-remove right E))))))

when I try to use them , they do not work as the explanation .
I implement all the function inside
could somebody tell me how I can edit them to work
thank you very much
Posts: 12
Joined: Sun Nov 25, 2012 6:19 am

Return to Homework

Who is online

Users browsing this forum: No registered users and 1 guest