Branko Ilic

Articles: 18

Joined: Nov 13, 2020

Recently published

Article

Graphs in Java: Minimum Spanning Trees - Prim's Algorithm

Graphs are a convenient way to store certain types of data. The concept was ported from mathematics and appropriated for the needs of computer science. Due to the fact that many things can be represented as graphs, graph traversal has become a common task, especially used in data science and...

Branko Ilic

Oct 20, 2021

Article

Quicksort in Java

Sorting is one of the fundamental techniques used in solving problems, especially in those related to writing and implementing efficient algorithms. Usually, sorting is paired with searching - meaning we first sort elements in the given collection, then search for something within it, as it is generally easier to search...

Branko Ilic

Oct 18, 2021

Article

Radix Sort in Java

Branko Ilic

Sep 15, 2021

Article

Encode a String to UTF-8 in Java

When working with Strings in Java, we oftentimes need to encode them to a specific charset, such as UTF-8. UTF-8 represents a variable-width character encoding that uses between one and four eight-bit bytes to represent all valid Unicode code points. A code point can represent single characters, but also have...

Branko Ilic

May 05, 2021·6 min read

Article

How to Filter a Map by Key or Value in Java

Map implementations in Java represent structures that map keys to values. A Map cannot contain duplicate keys and each can at most be mapped to one value. The Map<K,V> implementations are generic and accept any K (key) and V (value) to be mapped. The Map interface...

Branko Ilic

Apr 09, 2021·5 min read

Article

Java 8 – How to Sort List with Stream.sorted()

A stream represents a sequence of elements and supports different kind of operations that lead to the desired result. The source of these elements is usually a Collection or an Array, from which data is provided to the stream. Streams differ from collections in several ways; most notably in that...

Branko Ilic

Mar 17, 2021·7 min read

Article

Java: Check if String Starts with Another String

In this article, we'll take a look at how to check if a String starts with another String in Java. This is is a fairly common task in programming, and is very similar to checking if a string contains a substring. For example, this can come in useful if we...

Branko Ilic

Jan 18, 2021·8 min read

Article

Guide to Apache Commons' StringUtils Class in Java

The Apache Commons library provides many new interfaces, implementations and classes that expand on the core Java Framework. It's one of the top third-party libraries and is present in many projects. In this article, we've compiled a Guide to Apache Commons' StringUtils class, which provides some very good utilities and...

Branko Ilic

Dec 18, 2020·11 min read

Article

Java: Check if Array Contains Value or Element

Whether in Java, or any other programming language, it is a common occurrence to check if an array contains a value. This is one of the things that most beginners tend to learn, and it is a useful thing to know in general. In this article, we'll take a look...

Branko Ilic

Nov 19, 2020·5 min read