Initialize and prepend to a list

The List in Scala is like the Array in that they are a sequence of objects that share the same type. The List collection, however, is immutable. When performing operations on lists, the result will be a new list with a new value. The cons operator (::) prepends an element to a list.

Imagine you wanted to raise the stakes a little when playing Twenty-One by adding a monetary prize for each round. The winner of round one gets $10, the winner of round two gets $15, etc.

In this exercise, you'll create a list to store these prize values for five rounds, then prepend to it to accommodate another round.

Initialize a list named prizes with an element for each round's prize, where the first through fifth round's prizes are 10, 15, 20, 25, and 30, respectively.
Prepend to prizes using the cons (::) operator so a new first round is added, worth $5. Name the new list newPrizes.

Exercise

Initialize and prepend to a list

Instructions