How to Print all leaf Nodes of a Binary tree in Java [ Coding Interview Questions]

This is another interesting coding problem that is based on a binary tree and mostly asked beginner programmers. If you have some experience in solving binary tree-based problems then it's rather easy to solve because, like many other binary tree algorithms, you can use recursion to print all leaf nodes of a binary tree in Java. Since the tree is a recursive data structure, you can apply the same algorithm to both the left and right subtree. In order to solve this problem, the first thing you should know is what is a leaf node because if you don't know that then you won't be able to solve the problem. Well, a leaf node is the one whose left and right child nodes are null.

5 Free Online Courses to learn Photoshop for Graphic Design in 2021 - Best of Lot

If you want to become a web designer or Graphics designer and want to learn Photoshop and looking for the best online courses to learn Photoshop from scratch on Udemy, Pluralsight, and Coursera then you have come to the right place. In the past, I have shared free web design courses, and In this article, I am going to share 5 free courses from Udemy and Coursera to learn Photoshop online. These Photoshop courses have been created by expert Graphic designers and Photoshop experts and trusted by thousands of developers to learn Photoshop skills and they are absolutely free. You can use them to learn Photoshop skills and start your career as a Graphic designer or Web designer.

10 Things about Array Every Java Programmer Should Learn [UPDATED]

Without any doubt, the array is one of the most used data structures in all programming languages, including Java. Pick up any programming language be it functional, object-oriented, imperative, or even scripting languages like Python, Bash, and Perl, you will always find an array. That's why it's important for any programmer to have a good understanding of the array data structure. Like any other data structure, the array also provides a way to organize and store objects, but the way it does makes all the difference. An array is used to store elements in the contiguous memory location and many C, C++ programmers can take advantage of a pointer to work with an array.

5 Free Courses to Crack Google Cloud Professional Data Engineer Certification Exam

If you are preparing for Google Cloud Professional Cloud Data Engineer certification or simply known as GCP Data Engineer exam in 2021 and looking for free online Google cloud Engineer courses then you have come to the right place. In the past, I have shared the best courses to learn Google Cloud as well as the best online training courses to pass cloud engineer, cloud developer, and cloud architect certifications, and today, I am going to share free GCP Cloud Data Engineer certification courses for both beginners and experienced cloud professionals.

Binary tree InOrder traversal in Java using Recursion

The InOrder traversal is one of the three popular ways to traverse a binary tree data structure, the other two being the preOrder and postOrder. During the in-order traversal algorithm, the left subtree is explored first, followed by root, and finally nodes on the right subtree. You start traversal from root then go to the left node, then again go to the left node until you reach a leaf node. At that point in time, you print the value of the node or mark it visited and moves to the right subtree. Continuing the same algorithm until all nodes of the binary tree are visited. The InOrder traversal is also known as the left-node-right or left-root-right traversal or LNR traversal algorithm.

Top 5 Online Courses to learn Unity Game Engine for Beginners in 2021 - Best of Lot

If you are learning Unity 3D in 2021 and looking for the best online course to learn Unity 3D and become a professional Game developer then you have come to the right place. In the past, I have shared some free courses to learn the C# programming language and Game development basics using Unity 3D, and other popular Game engines available on market like Unreal Engine, Libgdx, and today, I am going to share the best Unity 3D and 2D courses from Udemy, Pluralsight, and Coursera to learn this useful skill.