java模擬鬥地主發牌（CollectionsDemo）

import java.util.ArrayList;
import java.util.Collections;


public class ConllectionsDemo {
	public static void main(String[] args) {
		String[] str = {"黑桃","紅桃","方片","梅花"};
		String[] str2 = {"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
		ArrayList arr = new ArrayList();
		arr.add("KING");
		arr.add("king");
		for(int i = 0;i < str.length;i++){
			for(int j = 0;j < str2.length;j++){
				arr.add(str[i] + str2[j]);
			}
		}
		
		Collections.shuffle(arr); //打亂順序
		
		//分發A,B,C三人
		ArrayList A = new ArrayList();
		ArrayList B = new ArrayList();
		ArrayList C = new ArrayList();
		
		for(int i = 0;i < arr.size() - 3;i++){
			if(i % 3 == 0){
				A.add(arr.get(i));
			}
			if(i % 3 == 1){
				B.add(arr.get(i));
			}
			if(i % 3 == 2){
				C.add(arr.get(i));
			}
		}
		
		System.out.println("A的牌是" + A);
		System.out.println("B的牌是" + B);
		System.out.println("C的牌是" + C);
		
		//底牌
		for(int i = arr.size() - 3;i < arr.size();i++){
			System.out.println("底牌是：" + arr.get(i));
		}
			
	}
}