Anđela Niketić

Articles: 7

Joined: Jan 07, 2021

Recently published

Article

Graphs in Python: Breadth-First Search (BFS) Algorithm

Graphs are one of the most useful data structures. They can be used to model practically everything - object relations and networks being the most common ones. An image can be represented as a grid-like graph of pixels, and sentences can be represented as graphs of words. Graphs are used...

Anđela Niketić

Mar 31, 2022·17 min read

Article

Graphs in Python: Depth-First Search (DFS) Algorithm

Originating from mathematics, graphs are now widely used data structures in Computer Science. One of the first problems we encounter when constructing any algorithm regarding Graph processing or traversal is how we represent the graph and then, how to traverse that representation. Graph traversal is not a trivial problem, and...

Anđela Niketić

Mar 30, 2022·15 min read

Article

Python: Validate Email Address with Regular Expressions (RegEx)

Regular Expressions, or RegEx for short, are expressions of patterns that can be used for text search and replace actions, validations, string splitting, and much more. These patterns consist of characters, digits and special characters, in such a form that the pattern matches certain segments of text we're searching through....

Anđela Niketić

Nov 10, 2021

Article

How to Compare Dates in Java

Dates are something we encounter in everyday life, whether they're used for calendars, scheduling appointments, or even remembering birthdays. Naturally, when working with dates we will often need to know if a certain date comes before or after another, or if they represent the same calendar date. In this article,...

Anđela Niketić

Apr 21, 2021·8 min read

Article

Java: Check if String is a Number

Strings are a handy way of getting information across and getting input from a user. In this article, we will go through a couple of ways check if a String is Numeric in Java - that is to say, if a String represents a numeric value. Check if String is...

Anđela Niketić

Jan 07, 2021·5 min read