Why Reinvent The Wheel When Math.min() And Math.max() Exist? — New day, new exercise for my DevAdvent 2022. Over the weekend I discovered a few other devAdvents but still decided not to follow any of them. Instead, I will continue to pick a random problem from CodeWars. …

A Look at Alternative Approaches to Working with Large Integers — We have reached the end of this DevAdvent 2022. And to end things beautifully, CodeWars proposes a level 4 kyu problem for me. And like any difficult problem, it presents itself as something simple, like adding 2 plus 2. And it’s all about sums, but sums of very large, gigantic…

Using Functions to Determine the Outcome of a Duel — The problem for today’s DevAdvent concerns comparing elements of two arrays. The interesting thing is how the problem is presented, through a real-world example. Imagine you want to build a game and have two teams facing off against each other. Each member challenges the corresponding member of the opposing team…

Using Binet’s Formula to Save Time and Resources — Christmas is approaching, and this DevAdvent 2022 is also coming to an end. I don’t have much time today, so I’ll settle for solving a small problem related to Fibonacci numbers and JavaScript. I need an efficient method for checking if a number belongs to the Fibonacci series or not…

A Step-by-Step Guide to Identifying Armstrong Numbers in Base 10 — We are approaching Christmas, and therefore the end of DevAdvent. Today’s exercise also involves math and the properties of numbers. I must say that I am pleasantly surprised by the variety of math problems that CodeWars offers. It also allows me to discover many new things, for example, Narcissistic Numbers…

Exploring Regular Expressions, My Solution, and the AI Solution — The problem for today’s DevAdvent 2022 is about Pig Latin. But what is Pig Latin? It is a playful language, used among English-speaking children. To me, a native Italian speaker, it is a simplified version of the Farfallino Alphabet. But beyond the childhood games, the interesting thing about this problem…

A Beginner’s Guide to Calculating Persistence in JavaScript — The problem for today’s DevAdvent involves a mathematical concept that I was not familiar with: the persistence of a number. This worried me a bit. But after understanding the underlying concept, I realized something: beyond its mathematical formulation, the exercise is really simple. But let’s start with the problem text. The Problem: Persistent Bugger

Or, How To Fail If You Rely On An AI To Do Your Job — At first I thought about having an artificial intelligence write this piece. I have read many enthusiastic reviews of ChatGPT. Today’s DevAdvent problem is very simple. Why not? The problem is that there was no way to get him to solve a trivial problem. I wasn’t expecting the best solution…

Not In Reality, But To Fix a DevAdvent 2022 Issue — Today’s DevAdvent 2022 issue was particularly interesting. In itself it is not very complicated, it is about calculating the point of intersection of two curves. The most interesting thing was refracting the result. But let’s start with the text of the problem. The Problem: Buying a Car link to the Kata A man has a…

Or, How To Use JavaScript To Do The Diffefere (A \ B), The Intersection (A ∩ B), The Union (A ∪ B), The Symmetric Difference (A Δ B) And The Cartesian Product (A × B) — Today’s DevAdvent 2022 issue is about set theory. Given two arrays of elements, how do I find their difference? There is a very easy way to do this. And also to do the intersection of two arrays and to calculate their geometric difference.

Or Why Spend Money When We Can Create Our Art For Free? — Over the past few weeks, I’ve written a lot of posts about JavaScript. I realized that the images available online to illustrate mathematical and IT concepts are always the same. That’s why I decided to illustrate my stories with AI-generated images. There are various possibilities. I decided to use a…

Or How To Use a Recursive Function Instead Of a Loop — Today’s problem of my personal DevAdvent 2022 is about calculating percentages, population and number series trends. Or, to put it simply, how to make a simple prediction about the increase in population of a small town? The Problem: Growth of a Population link to the Kata

4 Simple Problems To Train Your JavaScript — Today’s DevAdvent problem is very simple. For this I decided to solve more than one. They are all simple problems, but useful for practice. Testing 1–2–3 link to the Kata Your team is writing a fancy new text editor and you’ve been tasked with implementing the line numbering. Write a function which…

Or, How To Use Array.map() And Array.reverse() Together To Modify A Sentence — Today’s problem is how to reverse the order of the letters in a word, and of each word in a sentence. It’s a fairly simple problem but one that shouldn’t be underestimated. It allows you to test your knowledge of arrays and strings. The problem link to the Kata

Or, Sometimes The Simplest Things Reveal Unexpected Solutions — Today’s problem of this DevAdvent 2022 is really simple. I could categorize it among the essential things to know in JavaScript: how to convert a number to a string. But although it is a simple problem, there are various solutions. Let’s see what they are. The problem link to the Kata We…

Or About Arrays, Strings, And Sort Functions — Today’s DevAdvent problem is an exercise in number ordering. But with an interesting variation: it requires you to break down a number and use its digits to get the highest possible number. …

Or There’s Always A Smarter Solution If You Know How To Use Regex! — Today’s De Advent problem requires some knowledge of regular expressions. I admit I’m not very good at this. This problem was interesting because it allowed me to explore my limits a little better. The problem link to the Kata Complete the method/function so that it converts dash/underscore delimited words into camel casing…

The second problem of my DevAdvent 2022 concerns square roots. The story of the problem is about cubes, squares and a passion for the numbers. But long story short, it’s about whether a number is a perfect square or not. The problem is very simple, and my solution requires only…

The Twitter world is in turmoil. I’ve decided to abandon it. I am certainly missing something. For example I don’t know if anyone is organizing a DevAdvent like last year. It was a good experience last year and I would like to repeat it. But I don’t have all the…

Something went wrong at the North Pole. Santa Claus did a sample check: he discovered that some gifts are missing in the bags. Fortunately, everything is recorded and we can compare the various lists to find the differences. We can add the missing packages. The Puzzle: Find The Missing Presents 🎁