♦ Is it a valid binary search tree (BST) ?

Q. Write code test if a given tree is a binary search tree (i.e. BST)? A. A binary search tree (BST) is a binary tree where each node satisfies the following conditions: 1) key in any node is larger than the keys in all nodes in that node’s left subtree…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in Coding, member-paid, Tree structure

Binary Tree – Get root to leaf max sum in Java example

Q. Write code to traverse a binary tree and get the largest “root-to-leaf sum”? A “root-to-leaf sum” is a sum of the node values in a root-to-leaf path.

A. Let’s have a basic implementation of the above binary tree Node interface.

Here is the computeLargestRootToLeafSum(..,..,..) method

Output:…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in member-paid, Tree structure

♦ Tree – Get root to leaf max sum in Java example

Q. Write code to traverse a tree and get the largest “root-to-leaf sum”? A “root-to-leaf sum” is a sum of the node values in a root-to-leaf path.

A. Let’s have a basic implementation of the above Node interface.

Here is the computeLargestRootToLeafSum(..,..,..) method

Output:

...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in member-paid, Tree structure

Tree flattening example in Java

Q. Traverse the tree in depth and return a list of all passed nodes. It should handle different data types as Double, String, etc. The4 interface for the tree node is

A. Tree storing numbers: Tree storing text: #1. Define the implementation class for the above interface.

#2.…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in member-paid, Tree structure

Binary Tree – Sum Levels Java Example

Q. Write code to traverse a tree and return the sum of the values (Node.getValue()) of all nodes at the level N in the binary tree?

A. Let’s have a basic implementation of the above Node interface.

Here is the getLevelSum(root, level) method with a basic example

…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in member-paid, Tree structure

♦ Tree – Sum Levels Java example

Q. Write code to traverse a tree and return the sum of the values (Node.getValue()) of all nodes at the level N in the tree?

A. Let’s have a basic implementation of the above Node interface.

Here is the getLevelSum(root, level) method with a basic example. The levels…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in member-paid, Tree structure

Tree structure – calculate average recursively & iteratively in Java

Q. Complete the following “TreeProcessingImpl” class ….. so that the unit tests shown below pass? Skeleton Code

Unit Tests

A. Solution 1:

Solution 2: Using recursion for getAverage(…) and iteration for getSum(…)

Key Points #1: Recursion can cause stack overflow exception if you…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register

Part 4: Java Tree structure interview and coding questions

This is an extension to Java Tree structure interview questions and coding questions — Part 3 where recursion was used for FlattenTree interface. Let’s use iteration here. Step 1: The FlattenTree  interface.

Step 2: The iterative implementation IterativeFlattenTree. This uses a LIFO stack to push and pop Tree elements.

Step 3: Finally,…...

Members Only Content

This content is for the members with any one of the following paid subscriptions:

30-Day-Java-JEE-Career-Companion, 90-Day-Java-JEE-Career-Companion, 180-Day-Java-JEE-Career-Companion, 365-Day-Java-JEE-Career-Companion and 2-Year-Java-JEE-Career-Companion Feel free to evaluate the quality of the contents Free FAQs | HomeTry Log In | Register
Posted in Coding, member-paid, Tree structure
Page 1 of 212

Fast-track by empowering yourself to choose from multiple job offers, open more doors and increase your earning potential.