So, you’ve got a HackerRank test coming up, huh? It’s pretty common these days, with lots of companies using it to see if you can code. It can feel a bit daunting, but honestly, it’s just another ...

You are given a valid XML document, and you have to print its score. The score is calculated by the sum of the score of each element. For any element, the score is equal to the number of attributes it ...

This method is called to process arbitrary data (e.g. text nodes and the content of <script>...</script> and <style>...</style>). The data argument is the text content of HTML. You are given an HTML ...

Are you aiming for a FAANG company or want to crack your first tech interview? Data structures are the backbone of coding interviews. This subject shows your problem-solving, logic, and optimization ...

If you’ve ever searched for ways to practice coding or prep for tech interviews, you’ve probably seen LeetCode mentioned everywhere. But in 2025, is LeetCode free, or do you have to pay to get ...