Updating arrays
Since arrays are mutable, the elements in them can be updated.
In the context of Twenty-One, this could mean adding to an element in the array if that player chooses to hit to get closer to 21.
In this exercise, you'll do just that. The card variables you need are already defined, as well as the hands array you created, parameterized, and initialized previously.
If you run the code more than once, you will keep adding to hands since arrays are mutable. Your final result will then be different from the expected solution. Reloading the page will reset the hands array.
本练习是课程的一部分
Introduction to Scala
练习说明
- Add a
fiveClubsto the first player's hand inhands. - Add a
queenSpadesto the second player's hand inhands. - Add a
kingClubsto the third player's hand inhands.
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 player's hand and print out hands before each player hits
hands(0) = tenClubs + fourDiamonds
hands(1) = nineSpades + nineHearts
hands(2) = twoClubs + threeSpades
hands.foreach(println)
// Add 5♣ to the first player's hand
___ = ___ + ___
// Add Q♠ to the second player's hand
___ = ___ + ___
// Add K♣ to the third player's hand
___ = ___ + ___
// Print out hands after each player hits
hands.foreach(println)