Initialize a list using cons and Nil
You just initialized the prizes list like this:
val prizes = List(10, 15, 20, 25, 30)
That's works great! There's also another commonly used technique that combines the cons (::) operator and Nil, which is the empty list.
In this exercise, you'll initialize the same prizes list from last exercise, just using this fancy, efficient shorthand.
本练习是课程的一部分
Introduction to Scala
练习说明
- Using
::andNil, initialize a list namedprizeswith an element each round's prize, where the first through fifth round's prizes are 10, 15, 20, 25, and 30, respectively.
交互式实操练习
通过完成这段示例代码来试试这个练习。
// Initialize a list with an element each round's prize
val prizes = ___
println(prizes)