3. Arrays and loops

 

   

Practice Time

Looping over arrays and lists is a fundamental technique that has a lot of flexibility in Kotlin. Let's practice.

Basic example

1. Create an integer array of numbers called numbers, from 11 to 15.
2. Create an empty mutable list for Strings.
3. Write a for loop that loops over the array and adds the string representation of each number to the list.

Challenge example

• How can you use a for loop to create (a list of) the numbers between 0 and 100 that are divisible by 7?

var list3 : MutableList, = mutableListOf() for (i in 0..100 step 7) list3.add(i) print(list3) [0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98] ``` OR ``` for (i in 0..100 step 7) println(i.toString() + " - ")