java 实现扑克牌发牌

package 扑克牌分发;

import java.util.Arrays;
import java.util.Comparator;
import java.util.Random;

public class PaiHe {
	private ArrayList pais = new ArrayList(53);

	public PaiHe() {
		for (HuaSe tmp : HuaSe.values()) {
			for (int k = 4; k < 17; k++) {
				pais.add(new Pai(k, tmp));
			}
		}
	}

	public Pai[] faPai() {
		Random r = new Random();
		Pai[] res = new Pai[16];
		for (int i = 0; i < res.length; i++) {
			int pos = r.nextInt(pais.size());
			Object p = pais.delete(pos);
			if (p != null && p instanceof Pai) {
				Pai pp = (Pai) p;
				res[i] = pp;
			}
		}
		return res;
	}

	public static void main(String[] args) {
		PaiHe ph = new PaiHe();
		for (int i = 0; i < 3; i++) {
			Pai[] arr = ph.faPai();
			Arrays.sort(arr, new Comparator() {
				public int compare(Pai o1, Pai o2) {
					int res = o1.getNum() - o2.getNum();
					if (res == 0) {
						res = o1.getColor().compareTo(o2.getColor());
					}
					return res;
				}
			});
			System.out.println(Arrays.toString(arr));
		}
		System.out.println("底牌:");
		System.out.println(Arrays.toString(ph.getPais().getData()));
	}

	public ArrayList getPais() {
		return pais;
	}
}

package 扑克牌分发;

public class Pai implements Comparable {
	private final int num; // 1-13
	private final HuaSe color;

	public Pai(int num, HuaSe color) {
		this.num = num;
		this.color = color;
	}

	public int getNum() {
		return num;
	}

	public HuaSe getColor() {
		return color;
	}

	public String toString() {
		String aa = "" + num;
		if (num > 10) {
			if (num == 11)
				aa = "J";
			else if (num == 12) {
				aa = "Q";
			} else if (num == 13)
				aa = "K";
			else if(num==14)
				aa="A";
			else if(num==15)
				aa="2";
			else if(num==16)
				aa="3";
		}
		String res = "(" + aa + ":" + color + ")";
		return res;
	}

	@Override
	public int compareTo(Pai o) {
		// TODO Auto-generated method stub
		return 0;
	}
}

package 扑克牌分发;

import java.util.Arrays;

public class ArrayList {
	private Comparable[] arr;
	private int size = 0;

	public ArrayList() {
		this(10);
	}

	public ArrayList(int length) {
		arr = new Comparable[length];
	}

	public void add(Comparable data) {
		arr[size++] = data;
		if (size >= arr.length)
			resize();
	}

	public Comparable delete(int index) {
		if (index >= size || size < 0)
			throw new ArrayIndexOutOfBoundsException();
		Comparable res = arr[index];
		System.arraycopy(arr, index + 1, arr, index, arr.length - index - 1);
		arr[size - 1] = null;
		size--;
		return res;
	}

	public void update(int index, Comparable data) {
		if (index >= size || size < 0)
			throw new ArrayIndexOutOfBoundsException();
		arr[index] = data;
	}

	public Comparable[] getData() {
		return this.arr;
	}

	public String toString() {
		return Arrays.toString(arr);
	}

	private void resize() {
		Comparable[] res = new Comparable[arr.length * 3 / 2];
		System.arraycopy(arr, 0, res, 0, arr.length);
		this.arr = res;
	}

	public int size() {
		return this.size;
	}

	public Comparable[] sort() {
		Comparable[] res = getData();
		Arrays.sort(res);
		return res;
	}
}

package 扑克牌分发;

public enum HuaSe {
	HEI("黑桃"), HONG("红桃"), MEI("梅花"), FANG("方块");

	private String name;

	private HuaSe(String name) {
		this.name = name;
	}
	public String toString() {
		return this.name;
	}
}