Graph Data Structure is an important tool to model real-world situations. In this post, you will learn one of the implementations of the TDA and an example of how to use it. To use a graph, you first have to understand when and why you can use it. As in other topics, you will find […]
Undirected Simple Graph Data Structure: Implementation and usage in Java Read More »
The General Tree data structure is one of the classic data structures studied in a Data Structure and Algorithms course. You will learn here how to implement the general tree data structure. So, let’s start by stating what do we mean by General Tree. General Tree Definition A tree is a mathematical model. Therefore, it
General Tree Data Structure: implementation and usage in Java Read More »
The Stack data structure has many applications in programming. In this post, you will learn what are the Stack operations and how to use them to solve real-life problems. Stacks in the real world Programming is about modelling real-life situations. The use of stacks is not the exception. The Tower of Hanoi is a game
Using the Stack data structure in Java (with examples) Read More »
The Queue data structure is used in the solution of many different problems. In this article, I’ll explain what a queue is, what are the methods available for you to use and, one example of how we can use it to solve problems. As you should remember, in programming, especially in Object-Oriented Programming, we aim
Using the Queue Data Structure in Java (with examples) Read More »
The List data structure is one of the most used data structures in any programming language. Therefore, it is important to learn what it is and how to use it. What is a data structure? In Computer Science, we consider a data structure as a way to organize data to enable us to efficiently access
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Exception handling is a must-use tool for programmers. It avoids the uncomfortable app crashes that we see often when using certain software. So, let’s get to it. What is an Exception? An exception in a programming language is an unexpected event that stops the current flow execution of a program. Some examples of exceptions are:
Exception handling in Java (with examples) Read More »
At the end of this post, you will find three cheat sheets. A Java, C# and a Python Cheat Sheet and the other one for C#. When you download the files, you will see the most common constructs of each language used in Object-Oriented Programming. Notice that in these cheat sheets, you will find only
Java, Python and C# Cheat Sheet Read More »
In this post, you will find some of the most common syntax errors in Java and tips on how to fix them. Most of these errors are common to all programming languages. Here, you will only find the errors and possible ways on how to fix them. For you to have a better understanding of
Common syntax errors in Java and tips on how to fix them Read More »
Syntax errors are a common issue for beginners. That’s why I will give you some tips on how to fix and avoid them. It is worth mentioning that once you have some experience, this type of error won’t be an issue at all for you. However, at the beginning of your programming studies, it can
How to understand and fix Syntax Errors in Programming Read More »
Arrays are a powerful tool in any programming language. In this Unit we are going to cover unidimensional and multidimensional arrays in Java. The general term to refer to arrays is collections. During the lessons, you will see these terms interchangeable. Lesson 1: Collections in Java: Unidimensional arrays Collections is a very important topic in
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