What is binary tree?
A tree data structure in which a node can at maximum two children. Binary Tree can have have one child or two children. Node in binary Tree can have following structure
Node having one child
Left child
Right child
Node having two children
Both Left and right child
We have to find the number of nodes in the binary tree. We will use the Level order traversal or Breadth first traversal to scan the complete binary tree. We have to travel at-least once to get the number of nodes in the binary tree.
A node in a binary tree which has child node(s) is called non leaf node.
Non Leaf Node can be categorized as follows:
Non Leaf node having one child (Either left child or right child)
Non Leaf node having two children (Both left child and right child)
Find number of non leaf nodes in binary tree with one child node breadth first search(BFS)/level order traversal(non-recursive) algorithm (example)
What is non leaf node in binary tree?
A node in a binary tree which has child node(s) is called non leaf node.
Non Leaf Node can be Node having one child or both children:
One child (Either left child or right child)
Two children (Both left child and right child)
What is leaf node in binary tree?
A node in a binary tree which do not have any child nodes is called leaf node. The leaf node do not have any children i.e. left and right reference both null. We have to count the number of leaf nodes in the binary tree. In other ways we need to find out all the nodes in the binary tree which do not have any children (both right node and left node null).
So as per our problem statement, we have to iterate over the binary tree and find the number of leaf nodes in the binary tree.
We are given the Binary Tree, we need to find the maximum element in the Binary Tree. Suppose we have following tree, As per the problem statement we have to iterate over the binary tree and find the maximum element in the binary tree.
Lowest or least common ancestor is the earliest possible node where concerned child nodes joined.
Let us take an example tree, we will discuss some examples to clarify the LCA.
We have already discussed about the basics of Threads in java. Now we will discuss about creation process in java.
How we can create threads in java
Extending a class
Implementing a interface:
What is level in binary tree?
As per the definition of binary tree is one, where each node has, at most, 2 children. Each node can have left and right child. The root of the tree, is at level 0. Root’s children are at level 1, etc.
As an example, consider the tree:
We have to calculate the sum of all the nodes in a binary tree. To get the sum of all nodes in binary tree, we need to traverse the whole binary tree and while traversing we can start adding the sum of each node.
Let us define the problem statement, before we start our discussion about calculating the height of binary tree. What is height of Binary tree? Conventionally, the longest path from root to deepest leaf node define the height of binary tree.
Binary tree traversal using level order traversal or breadth first search non recursive algorithm in java (example). Visit root to leaf node level wise.
Binary Tree traversal is broadly categorized into following category
1.) Depth First Traversal
Pre Order Traversal
Post Order Traversal
In Order Traversal
2) Breadth First Traversal or Level Order Traversal.
