问题:编写一个程序 Deal.java,它采用命令行参数 N 并从洗好的牌中打印 N 手扑克牌(每手五张牌),中间用空行分隔。
我有:
public static void main(String[] args)
{
int N = Integer.parseInt(args[0]);
String[] suit = { "Clubs", "Diamonds", "Hearts", "Spades" };
String[] rank =
{
"2", "3", "4", "5", "6", "7", "8", "9", "10",
"Jack", "Queen", "King", "Ace"
};
// initialize cards in a deck
String[] deck = new String[suit.length * rank.length];
for (int i = 0; i < rank.length; i++)
for (int j = 0; j < suit.length; j++)
deck[rank.length*i + j] = rank[i] + " of " + suit[j];
// shuffle deck
int d = deck.length;
for (int i = 0; i < d; i++)
{
int r = i + (int) (Math.random() * (d-i));
String temp = deck[r];
deck[r] = deck[i];
deck[i] = temp;
}
// repeat for N number of people
for (int t = 0; t < N; t++)
{
// print 5 random cards
for (int i = 0; i < 5; i++)
System.out.print(deck[i] + " ");
System.out.println();
}
}
有人能告诉我我在这里做错了什么吗?我收到错误 ArrayIndexOutOfBoundsExceptions,不知道为什么。这是我书中练习集的问题,而不是家庭作业。
最佳答案
我假设您在这一行遇到数组索引越界异常:
deck[rank.length*i + j] = rank[i] + " of " + suit[j];
你的意思一定是这样的:
deck[suit.length*i + j] = rank[i] + " of " + suit[j];
关于java - 为 N 名玩家生成一手牌(每手五张牌),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9351625/