# Binary search tree recursive delete in c

As you took the leftmost child, you are sure that the leaf will have a NULL left child.If we want to delete 15 from the above BST, we can do some tricks to reduce the situation to either case 1 or case 2.different elements with same key, shall be allowed in the tree or not, does not depend on the order relation, but on the application only.Why is it necessary to pass btreenode** as an argument in insert() function but only btreenode* in case of ier().As you took the leftmost child, you are sure that the leaf will have a NULL left child. my issue is keeping the parent node of a node I want to delete in order to re link the subtree that is left in the process of deleting a node with 1 or 2 children.This is the snippet of the two functions I am using.Below is the function I have so far: One possible way of deleting a node is to replace it with his direct successor the delete the leaf, so that you do not break the tree invariant.While searching, the desired key is compared to the keys in BST and if found, the associated value is retrieved.We do this step recursively until we find the correct position in the tree to insert the new node.Searching a binary search tree for a specific key can be programmed recursively or iteratively. If the tree is null, the key we are searching for does not exist in the tree.We will traverse the tree by using post Order traversal because we have to delete all child nodes first before deleting root node.

- The basic rule of the formation of a binary tree in C ++ If the node is greater than the added – added. Binary trees – not necessarily search trees.
- Binary Trees in C++. the average search time for a binary tree is log base 2. it will be necessary to include a function to delete the tree in order to.
- A binary search tree follows a concept of the nodes whose numbers are lesser than the parent/pointed node are linked to the left and the nodes whose are greater than the parent/pointed. Here is the source code of the C program to search for an element in a tree recursively. void deletestruct node **;
- Function in C to delete a binary tree using post order traversal. We will use recursion to delete a tree one node at a time. C program with algorithm explanation and sample input and output.

As you took the leftmost child, you are sure that the leaf will have a NULL left child.If we want to delete 15 from the above BST, we can do some tricks to reduce the situation to either case 1 or case 2.different elements with same key, shall be allowed in the tree or not, does not depend on the order relation, but on the application only.Why is it necessary to pass btreenode** as an argument in insert() function but only btreenode* in case of ier().As you took the leftmost child, you are sure that the leaf will have a NULL left child. my issue is keeping the parent node of a node I want to delete in order to re link the subtree that is left in the process of deleting a node with 1 or 2 children.This is the snippet of the two functions I am using.Below is the function I have so far: One possible way of deleting a node is to replace it with his direct successor the delete the leaf, so that you do not break the tree invariant.While searching, the desired key is compared to the keys in BST and if found, the associated value is retrieved.We do this step recursively until we find the correct position in the tree to insert the new node.Searching a binary search tree for a specific key can be programmed recursively or iteratively. If the tree is null, the key we are searching for does not exist in the tree.We will traverse the tree by using post Order traversal because we have to delete all child nodes first before deleting root node.