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Java 卡洗牌和交易。
卡洗牌和交易。
实例源码：
源代码：
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import java.security.SecureRandom;3
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public class Main5
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{7
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// execute application/**from N o w J a v a . c o m - 时 代 Java**/9
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public static void main(String[] args)11
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{13
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DeckOfCards myDeckOfCards = new DeckOfCards();15
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myDeckOfCards.shuffle(); // place Cards in random order17
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// print all 52 Cards in the order in which they are dealt21
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for (int i = 1; i <= 52; i++)23
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{25
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// deal and display a Card27
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System.out.printf("%-19s", myDeckOfCards.dealCard());29
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if (i % 4 == 0) // output a newline after every fourth card32
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System.out.println();34
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} 36
/**37
来 自 N o w J a v a . c o m - 时代Java38
**/39
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} 41
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}43
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class Card 46
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{48
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private final String face; // face of card ("Ace", "Deuce", ...)50
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private final String suit; // suit of card ("Hearts", "Diamonds", ...)52
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// two-argument constructor initializes card's face and suit55
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public Card(String face, String suit)57
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{59
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this.face = face;61
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this.suit = suit; 63
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} 65
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// return String representation of Card68
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public String toString() 70
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{ 72
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return face + " of " + suit;74
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} 76
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}78
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class DeckOfCards80
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{82
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private Card[] deck; // array of Card objects84
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private int currentCard; // index of next Card to be dealt (0-51)86
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private static final int NUMBER_OF_CARDS = 52; // constant # of Cards88
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// random number generator90
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private static final SecureRandom randomNumbers = new SecureRandom();92
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// constructor fills deck of Cards95
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public DeckOfCards()97
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{99
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String[] faces = {"Ace", "Deuce", "Three", "Four", "Five", "Six", 101
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"Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King"};103
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String[] suits = {"Hearts", "Diamonds", "Clubs", "Spades"};105
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deck = new Card[NUMBER_OF_CARDS]; // create array of Card objects108
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currentCard = 0; // first Card dealt will be deck[0]110
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// populate deck with Card objects113
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for (int count = 0; count < deck.length; count++) 115
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deck[count] = 117
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new Card(faces[count % 13], suits[count / 13]);119
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} 121
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public void shuffle()124
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{126
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currentCard = 0; 128
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for (int first = 0; first < deck.length; first++) 130
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{132
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