Project Euler using Scala: Problem #1

In this last post I gave a short introduction to Scala. In this article, I will show you the strength of Scala for solving one of the mathematical problems posted on Project Euler. The problem description is as follows:

Multiples of 3 and 5

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000.

I will first show you a naive approach and then I will show you a better approach.

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Why Scala?

scala-logo

Scala is jet another programming language in the world of programming languages. Its first version was released in 2001 and was conceptually developed by Martin Odersky, a professor at the EPFL in Switzerland. Fun fact: one of his first projects was called Pizza and was a super set of the Java language. Later on, he developed Scala. The name and logo are easy to explain. First of all, Scala stands for SCalable LAnguage. Another translation: “Scala” means “staircase” in Italian. The logo is based on a particular staircase in one of the buildings of EPFL. Now we have had a decent introduction to Scala, we can start exploring the language itself. So what is Scala all about?

The inspiration for the Scala logo.

The inspiration for the Scala logo.

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