我的甲板类遍历Suits数组似乎有问题。
卡类：
//David Diienno
//Lab 01
import java.util.Arrays;
public class Card {
private String m_rank; // card rank: a number between 2 and 10, or Jack, Queen, King or Ace
private char m_suit; // card suit: S, C, H, or D (spades, clubs, hearts, or diamonds)
// Helpful supporting structures
private static String [] Ranks = {"2","3","4","5","6","7","8","9","10", "Jack", "Queen", "King", "Ace"};
private static char [] Suits = {'C','H','D','S'};
// Default constructor: sets card rank to 2 and card suit to H
public Card(){
//setting default card to a 2 of hearts
m_rank = Ranks[0];
m_suit = Suits[1];
}
// Accessors and Mutators
public Card(String Rank, char suit){
if(isValidRank(Rank) == true){
m_rank = Rank;
}
if(isValidSuit(suit) == true){
m_suit = suit;
}
}
public String getRank() {
System.out.println(m_rank);
return m_rank;
}
public char getSuit() {
System.out.println(this.suitToString());
return m_suit;
}
public void setRank(String rank) {
// Make sure to validate provided input
if (isValidRank(rank) == true){
m_rank = rank;
}
else{
System.out.println("The rank you entered is invalid");
}
}
public void setSuit(char suit) {
// Make sure to validate provided input
if(isValidSuit(suit) == true){
m_suit = suit;
}
else{
System.out.println("The suit you entered is invalid");
}
}
// Method toString – returns string representation of the card that looks as follows:
// 2 of Hearts, 3 of Spades, Jack of Diamonds, etc.
// Requirement: you must use switch statement to convert character to string.
//
// Hint: card’s rank is already a string. Therefore you only need to convert card suit into
// a string that reads “Clubs”, “Spades”, “Hearts” or “Diamond s”
public String suitToString(){
switch(m_suit){
case 'c': return "Clubs";
case 'h': return "Hearts";
case 'd': return "Diamonds";
case 's': return "Spades";
default: return "Hearts";
}
}
public String toString() {
String data = "You have a " + m_rank + " of " + this.suitToString();
return data;
}
// Supporting static methods
// Returns an array of possible card ranks
public static String [ ] getPossibleRanks() {
//System.out.println(Arrays.toString(Ranks));
for(int i = 0; i < Card.Ranks.length; i ++){
System.out.println(Ranks[i]);
}
return Ranks;
}
// Returns an array of possible card suits
public static char [ ] getPossibleSuits() {
for(int i = 0; i < Card.Suits.length;i++){
System.out.println(Suits[i]);
}
return Suits;
}
public boolean isValidRank (String r){
for(int i = 0; i < Card.Ranks.length; i++ ){
if(Card.Ranks[i].equals( r)){
return true;
}
}
return false;
}
public boolean isValidSuit (char s){
for (int i = 0; i < Card.Suits.length; i++){
if(Card.Suits[i] == s){
return true ;
}
}
return false;
}
}
甲板等级：
import java.util.*;
public class DeckOfCards extends Card {
private ArrayList <Card> deck;
private Card card;
private String [] Ranks = super.getPossibleRanks();
private char [] Suits = super.getPossibleSuits();
// public void resetDeckOfCards() {
public DeckOfCards()
deck = new ArrayList<Card>();
for(int s = 0; s < Suits.length; s++)
{
for(int r = 0; r < Ranks.length; r++){
card = new Card(Ranks[r],Suits[s]);
deck.add(card);
}
}
}
public void display(){
System.out.println(deck);
}
//public Card getCard() { /* ... */ }
//Remove a random card from the Array List of cards and return its value from this method Notes:
//1. Ensure that there is at least one card in the ArrayList of Cards
//2. If there are no more cards left in the ArrayList of Cards, reset the Deck of Cards
//3. Use class Random to create a random number which will be an index into ArrayList of Cards
//4. Remove and return card stored in the ArrayList of Cards in the randomly created index
// Return an ArrayList of specified size (i.e. returned cards are being removed from the deck). //
// Notes:
// 1. Use method getCard() to retrieve a single card
// 2. Validate the value of size passed into this method and return null if size is invalid
//public ArrayList<Card> getHand(int size) { /* ... */ }
}
为什么当我显示我的数组列表时，它不会遍历花色，但会遍历行列，我仍然可以得到52张卡片，但都穿着相同的花色。
最佳答案
因此，问题似乎在于您的Suits数组具有大写字母，但是您的suitToString方法使用的是switch语句，其中使用了小写字母。由于默认情况是Hearts，因此我敢打赌您所有的牌都是Hearts。
关于java - 卡片组ArrayList，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/28306351/