Table of Contents

## How do you check if a node is a child of another node?

The Node. contains() method is used to check if a given node is the descendant of another node at any level. The descendant may be directly the child’s parent or further up the chain. It returns a boolean value of the result.

## What is a Childnode?

Any subnode of a given node is called a child node, and the given node, in turn, is the child’s parent. Sibling nodes are nodes on the same hierarchical level under the same parent node. Nodes higher than a given node in the same lineage are ancestors and those below it are descendants.

## How do I access my child’s node?

The childNodes property returns a collection of a node’s child nodes, as a NodeList object. The nodes in the collection are sorted as they appear in the source code and can be accessed by index numbers. The index starts at 0.

## What is parent and child in tree?

Child is a node that has a parent node. Parent is a node that has an edge to a child node. Leaf is a node that does not have a child node in the tree. Height is the length of the longest path to a leaf. Depth is the length of the path to its root.

## How many nodes does a child have?

In computer science, a ternary tree is a tree data structure in which each node has at most three child nodes, usually distinguished as “left”, “mid” and “right”. Nodes with children are parent nodes, and child nodes may contain references to their parents.

## What is a leaf node?

leaf node (plural leaf nodes) (botany) One of the spots upon a stem where buds and intercalary meristems occur, usually marking the end of a season’s growth.

## What is root node?

The root node is the highest node in the tree structure, and has no parent. This node is a global element and represents the entire message. It may have one or more child nodes, but can never have sibling nodes or be repeating.

## Do you cut above or below the node?

Always prune just above a node on a stem. In this way, the dormant buds in the node itself will grow out into new stems. If you cut below a node, you leave a section of stem (the internode) that cannot grow new stems. This section will be prone to rotting and becoming susceptible to diseases that can kill your plant.

## How do you identify a root node?

A root node is either the topmost or the bottom node in a tree data structure, depending on how the tree is represented visually. The root node may be considered the top if the visual representation is top-down or the bottom if it is bottom-up.

## What is the height of a tree with a single node?

According to Wikipedia, The height of a tree is the length of the path from the root to the deepest node in the tree. A (rooted) tree with only one node (the root) has a height of zero (or one).

## Can a tree node have multiple parents?

Yes, you can have nodes have both “children” and “parents”. However that is no longer a tree structured graph, so you will not be able to use a TreeModel – you must use a GraphLinksModel.

## What is root of binary tree?

A binary tree is made of nodes, where each node contains a “left” reference, a “right” reference, and a data element. The topmost node in the tree is called the root. Nodes with no children are called leaves, or external nodes. Nodes which are not leaves are called internal nodes.

## How do you know if a BST is empty?

If the tree is empty, then it is symmetrical to the vertical axis going through its root node. Else, check if the value at the root node of both subtrees is the same. If it is, then check if the left subtree and the right subtree are symmetrical.

## Is empty tree a BST?

A binary tree is made of nodes, where each node contains a “left” pointer, a “right” pointer, and a data element. The “root” pointer points to the topmost node in the tree. A null pointer represents a binary tree with no elements — the empty tree.

## Can BST have duplicates?

In a Binary Search Tree (BST), all keys in left subtree of a key must be smaller and all keys in right subtree must be greater. So a Binary Search Tree by definition has distinct keys and duplicates in binary search tree are not allowed.

## Are B trees of order 2 are full binary trees?

When I made a search for the above question I got an answer Yes . The definition for a full binary tree is as follows : A full binary tree (sometimes proper binary tree or 2-tree) is a tree in which every node other than the leaves has two children.

## Is an empty tree a tree?

A tree is a nonlinear data structure, compared to arrays, linked lists, stacks and queues which are linear data structures. A tree can be empty with no nodes or a tree is a structure consisting of one node called the root and zero or one or more subtrees.