Solution Review: Array of Integers

Task

In this challenge, you were provided a range of numbers. Using the range of numbers, you had to create and populate an array. The final array could only consist of even multiples of 3.

Solution

Let’s go over the solution step-by-step.

The first thing you had to do was create an array, let’s call it array1, using the range method to which you had to pass minRange and maxRange.

val array1 = Array.range(minRange, maxRange)

Next, you had to create a new array, let’s call it array2, by multiplying the elements of array1 with 3. This could be done using the map method.

val array2 = array1.map(_ * 3)

Finally, the last step required you to create yet another array, finalArray, by filtering out the even numbers from array2. This could be done using the filter method.

val finalArray = array2.filter(_ % 2 == 0)

You can find the complete solution below:

You were required to write the code from line 3 till line 5.