Arrays in Scala in Scala

The entries of an ArrayBuffer are mutable and can be changed freely, using indices and index assignment:

Index assignment takes an index and a value and changes the element placed at that index with the argument value:

val numbers = scala.collection.mutable.ArrayBuffer(50, 40, 30)

numbers(0) = 15
numbers(2) = -1

// numbers is now [15, 40, -1]

Assignment
Follow the Coding Tutorial and let's play with some arrays.

Hint
Look at the examples above if you get stuck.