[学习交流] 关于扑克牌发牌方法的问题

问题（需求）：我想弄一个扑克牌发牌的方法，类似四个人打升级，没人一次随机得到12张牌，留下底牌6张。但是总是不对，下标出界异常。
是在黑马基础班的课程练习基础上增加的

源码如下：

package test;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Random;
//定义一个扑克类
class Poker{
String color;
String num;
//定义带参数的构造方法
public Poker(String color,String num){
  this.color=color;
  this.num=num;
}
@Override
//重写了toString方法
public String toString() {
  // TODO Auto-generated method stub
  return "{"+this.color+"-"+this.num+"}";
}

}
public class Demo2 {
// static LinkedList pokers=new LinkedList();
/**
  * @param args
  */
public static void main(String[] args) {
  // TODO Auto-generated method stub
  LinkedList pokers=new LinkedList();
  pokers=createPoker();//创建52张牌的扑克
  pokers.add(new Poker("大王","红色"));
  pokers.add(new Poker("小王","黑色"));//加入大小王
  shufferPoker(pokers);//重新洗牌
  System.out.println("第一人得到的牌是："+getPoker(pokers)+getPoker(pokers).size());
  //System.out.println(pokers+""+pokers.size());
  System.out.println("第二人得到的牌是："+getPoker(pokers)+getPoker(pokers).size());
  System.out.println("第三人得到的牌是："+getPoker(pokers)+getPoker(pokers).size());
  System.out.println("第四人得到的牌是："+getPoker(pokers)+getPoker(pokers).size());
  System.out.println("底牌是："+pokers);
}
//创建扑克牌方法
public static LinkedList createPoker(){
  LinkedList list=new LinkedList();
  String[] colors={"黑桃","红桃","梅花","方块"};//花色
  //点数
  String[] nums={"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
  //创建扑克牌52张
  for(int i=0;i<colors.length;i++){
for(int j=0;j<nums.length;j++){
list.add(new Poker(colors[i],nums[j]));
}
  }
  return list;//返回集合
}
//洗牌方法
public static void shufferPoker(LinkedList pokers ){
  Random random=new Random();
  //随机交换两种牌，交换100次
  for(int i=0;i<100;i++){
int index1=random.nextInt(pokers.size());
int index2=random.nextInt(pokers.size());
Poker poker1=(Poker) pokers.get(index1);
Poker poker2=(Poker) pokers.get(index2);
pokers.set(index1, poker2);
pokers.set(index2, poker1);
  }
}
//输出扑克牌方法
public static void showPoker(LinkedList pokers){
  for(int i=0;i<pokers.size();i++){
System.out.print(pokers.get(i));
//10张牌一组输出
if(i%10==9){
System.out.println();
}
  }
}

这里是发牌方法，出错是在这里，初学者提问，大神莫笑！！！

//发牌方法，每组12张牌，剩余6张
public static LinkedList getPoker(LinkedList pokers){
  LinkedList list =new LinkedList();
  try{
for(int i=0;i<12;i++){
list.add(pokers.get(i));
pokers.remove(i);
}
  }catch(IndexOutOfBoundsException e){
e.getMessage();
  }
  return list;
}
}

输出的结果是：

第一人得到的牌是：[{方块-8}, {方块-6}, {梅花-K}, {梅花-2}, {方块-K}, {黑桃-J}, {方块-A}, {红桃-5}, {方块-4}, {黑桃-K}, {黑桃-4}, {黑桃-2}]12
第二人得到的牌是：[{方块-3}, {梅花-6}, {红桃-7}, {小王-黑色}, {方块-7}, {梅花-4}, {红桃-Q}, {红桃-3}, {红桃-A}, {方块-5}, {梅花-J}, {方块-Q}]9
第三人得到的牌是：[{方块-10}, {方块-J}, {黑桃-7}, {黑桃-3}, {黑桃-10}]2
第四人得到的牌是：[{梅花-3}]1
底牌是：[]

yuhongzhen · yuhongzhen

终于想到一个解决的办法，使用ArrayList可以解决问题，但是还是编译有问题，但是可以正常输出了。请大神指教！！！

输出结果：

第一个人的牌--[{梅花J}, {红桃7}, {红桃9}, {红桃Q}, {黑桃K}, {方块7}, {梅花10}, {黑桃6}, {方块K}, {梅花6}, {方块J}, {红桃A}]
第二个人的牌--[{方块4}, {方块6}, {梅花5}, {梅花2}, {梅花A}, {红桃3}, {黑桃5}, {方块5}, {黑桃9}, {梅花K}, {梅花4}, {红桃8}]
第三个人的牌--[{梅花3}, {黑桃A}, {红桃J}, {黑桃3}, {梅花7}, {红桃6}, {红桃10}, {红桃5}, {方块8}, {黑桃8}, {梅花9}, {黑桃Q}]
第四个人的牌[--{梅花Q}, {方块10}, {黑桃J}, {方块A}, {黑桃4}, {方块Q}, {黑桃10}, {红桃K}, {黑桃2}, {方块9}, {方块2}, {红桃4}]
底牌--[{黑桃7}, {方块3}, {梅花8}, {红桃2}]

源码如下：

package com.yuhongzhen;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Random;

//扑克类
class Poker{

String color; //花色

String num; //点数
//扑克类初始化参数
public Poker(String color, String num) {
super();
this.color = color;
this.num = num;
}

//重写toString方法
@Override
public String toString() {
return "{"+color+num+"}";
}
}

public class Demo2 {

public static void main(String[] args) {
ArrayList pokers = createPoker();
shufflePoker(pokers);
//showPoker(pokers);
/*System.out.print("第一个人的牌--");
getPoker(pokers);
System.out.println();
System.out.print("第二个人的牌--");
getPoker(pokers);
System.out.println();
System.out.print("第三个人的牌--");
getPoker(pokers);
System.out.println();
System.out.print("第四个人的牌--");
getPoker(pokers);
System.out.println();
System.out.print("底牌--");
System.out.println(pokers);
System.out.println(pokers.size());*/

System.out.println("第一个人的牌"+getPoker(pokers));
System.out.println("第二个人的牌"+getPoker(pokers));
System.out.println("第三个人的牌"+getPoker(pokers));
System.out.println("第四个人的牌"+getPoker(pokers));
System.out.println("底牌"+pokers);

}

//洗牌的功能
public static void shufflePoker(ArrayList pokers){
//创建随机数对象
Random random = new Random();
for(int i = 0 ; i <100; i++){
//随机产生两个索引值
int index1 = random.nextInt(pokers.size());
int index2 = random.nextInt(pokers.size());
//根据索引值取出两张牌，然后交换两张牌的顺序
Poker poker1 = (Poker) pokers.get(index1);
Poker poker2 = (Poker) pokers.get(index2);
pokers.set(index1, poker2);
pokers.set(index2, poker1);
}

}

//显示扑克牌
public static void showPoker(ArrayList pokers){
for(int i = 0 ; i<pokers.size() ; i++){
System.out.print(pokers.get(i));
//换行
if(i%10==9){
System.out.println();
}
}

}

//生成扑克牌的方法
public static ArrayList createPoker(){
//该集合用于存储扑克对象。
ArrayList list = new ArrayList();
//定义数组存储所有的花色与点数
String[] colors = {"黑桃","红桃","梅花","方块"};
String[] nums = {"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
for(int i = 0 ; i < nums.length ; i++){
for(int j = 0 ; j<colors.length ; j++){
list.add(new Poker(colors[j], nums[i]));
}
}
return list;
}
//发牌方法
public static ArrayList getPoker(ArrayList pokers){
ArrayList list=new ArrayList();
Iterator itr=pokers.iterator();
for(int i=0;i<12;i++){
list.add(i, itr.next());
itr.remove();
}
return list;
/*Iterator it=list.iterator();
while(it.hasNext()){
System.out.print(it.next());
}
*/
}

}

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[学习交流] 关于扑克牌发牌方法的问题

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