What are the rules of deletion in BST explain with example?
The node to be deleted has only one child. Simply replace it with the NULL and free the allocated space. In the following image, the node 12 is to be deleted. It has only one child. The node will be replaced with its child node and the replaced node 12 (which is now leaf node) will simply be deleted.
How does delete work in BST?
1) Node to be deleted is the leaf: Simply remove from the tree. 3) Node to be deleted has two children: Find inorder successor of the node. Copy contents of the inorder successor to the node and delete the inorder successor. Note that inorder predecessor can also be used.
How do you solve BST problems?
Replace every array element with the least greater element on its right. Fix a binary tree that is only one swap away from becoming a BST. Update every key in a BST to contain the sum of all greater keys. Check if a given sequence represents the preorder traversal of a BST.
How do insertions and deletions differ in a BST?
Insertion: For inserting element as left child of 2, we have to traverse all elements. Therefore, insertion in binary tree has worst case complexity of O(n). Deletion: For deletion of element 2, we have to traverse all elements to find 2 (assuming we do breadth first traversal).
How insertion and deletion is done in BST?
Go the root node of Tree, compare the value to be inserted with the current node value. If the value to be inserted is smaller then or equal to the root node value, go to the left subtree, else go to the right subtree. Compare the value again with the root node value of the subtree, and follow the step2 again.
Where AVL tree is used?
Applications Of AVL Trees AVL trees are mostly used for in-memory sorts of sets and dictionaries. AVL trees are also used extensively in database applications in which insertions and deletions are fewer but there are frequent lookups for data required.
How to delete a node in a BST?
1 Delete node 9 in the following BST : 2 First, we must find the node with the value 9 : (We use the variable p to point to the deletion node ) 3 Next, we find the successor node of the node 9 . 4 We copy the content of the successor node of the node into the deletion node (p) :
When to use pseudocode as an intermediate step?
Coders often use pseudocode as an intermediate step in programming in between the initial planning stage and the stage of writing actual executable code. Some other uses of pseudocode include the following: Describing how an algorithm should work.
How to delete a node from a binary search tree?
To delete the given node from the binary search tree (BST), we should follow the below rules. If the node is leaf (both left and right will be NULL), remove the node directly and free its memory. If the node has only right child (left will be NULL), make the node points to the right node and free the node.
How to create an example pseudocode document?
Creating an Example Pseudocode Document 1. Open a plain-text editor. You can use Notepad (Windows) or TextEdit (Mac) by default if you don’t want to install a… 2. Define your program. This program will request a greeting from the user. If the greeting matches a specific… 3. Write the