JAVA模拟斗地主洗牌，发牌，看牌

//定义一个双列集合，键：表示牌的编号，值：表示具体的牌，规则：编号越小牌越小Map<Integer,String>pokers=newHashMap<>();
//定义一个单列集合，用来存储所有牌的的编号List<Integer>list=newArrayList<>();      

//普通牌52张String[] nums= {"3","4","5","6","7","8","9","10","J","Q","K","A","2"};
//花色"♠","♣","♥","♦"String[] colors= {"♠","♣","♥","♦"};
//用增强for循环将花色和牌数进行组合intnum=0;
for (Stringnumber : nums) {
for (Stringcolor : colors) {
Stringpoker=color+number;
//将牌的编号和具体的牌放到双列集合中，pokers.put(num,poker);
//将牌的编号放到单列集合中list.add(num);
//每添加一张，编号自增1num++;
            }
        }
//大小王//添加小王pokers.put(num,"🃏");
list.add(num++);
//添加大王pokers.put(num,"🃏");
list.add(num++);

//底牌List<Integer>dipai=newArrayList<>();
//三个玩家List<Integer>zhaoyun=newArrayList<>();
List<Integer>caocao=newArrayList<>();
List<Integer>liubei=newArrayList<>();

for(inti=0;i<list.size();i++){
//获取编号IntegerpokerNum=list.get(i);
if(i>=list.size()-3){
//底牌dipai.add(pokerNum);
            }elseif(i%3==0){
//给第一位玩家zhaoyun.add(pokerNum);
            }elseif(i%3==1){
//给第二位玩家caocao.add(pokerNum);
            }elseif(i%3==2){
//给第三位玩家liubei.add(pokerNum);
            }
        }

publicstaticStringprintPoker(List<Integer>nums,Map<Integer,String>pokers){
//1.对牌的编号进行升序排列Collections.sort(nums);
//2.遍历牌的编号集合，获取每一个编号StringBuildersb=newStringBuilder();
for (Integernum : nums) {
//num就是要查找具体牌的编号//3.根据编号去双列集合中查找该编号对应的具体牌Stringpoker=pokers.get(num);
//4.将获取到的牌进行拼接sb.append(poker+" ");
        }
//5.将最后的拼接的结果返回即可Stringstr=sb.toString();
//6.trim去除前后空格returnstr.trim();
    }

System.out.println("斗地主在线洗牌发牌：");
System.out.println("赵云:"+printPoker(zhaoyun,pokers));
System.out.println("曹操:"+printPoker(caocao,pokers));
System.out.println("刘备:"+printPoker(liubei,pokers));
System.out.println("底牌:"+printPoker(dipai,pokers));

importjava.util.*;
/*案例：模拟斗地主发牌需求：使用一个集合对象存储一副扑克牌，将所由扑克牌的顺序打乱，然后分发给用集合表示的三个玩家和底牌，应打印玩家和底牌的集合内容步骤：1.买一副扑克牌：将花色和数字分别进行组合，生成所有的普通牌手动添加“大王”“小王”2.洗牌使用Collections工具类的shuffle()方法打乱牌的顺序3.发牌遍历牌堆，将每一张牌分发到三个玩家手中留三张牌为底牌4.看牌分别打印每个玩家集合的内容*/publicclassTest {
publicstaticvoidmain(String[] args) {
//1.买牌//1.1定义一个双列集合，键：表示牌的编号，值：表示具体的牌，规则：编号越小牌越小Map<Integer,String>pokers=newHashMap<>();
//1.2定义一个单列集合，用来存储所有牌的的编号List<Integer>list=newArrayList<>();
//1.3具体的买牌动作//普通牌52张String[] nums= {"3","4","5","6","7","8","9","10","J","Q","K","A","2"};
String[] colors= {"♠","♣","♥","♦"};
//通过循环嵌套获取普通牌intnum=0;
for (Stringnumber : nums) {
for (Stringcolor : colors) {
Stringpoker=color+number;
//将牌的编号和具体的牌放到双列集合中，pokers.put(num,poker);
//将牌的编号放到单列集合中list.add(num);
//每添加一张，编号自增1num++;
            }
        }
//大小王//添加小王pokers.put(num,"🃏");
list.add(num++);
//添加大王pokers.put(num,"🃏");
list.add(num++);
//打印牌/* System.out.println("所有的牌："+pokers);System.out.println("编号："+list);*///        步骤2,3：洗牌和发牌//        分析：//        1.使用Collections工具类的shuffle()方法打乱牌堆集合的顺序//        2.分别创建三个玩家集合对象和底牌集合对象//        3.遍历牌堆的每一张牌，分别将索引对3取模的值为0.1.2的牌放到三个玩家集合中，将最后三张 存放到底牌集合中//洗牌Collections.shuffle(list);
//System.out.println("洗好牌后的编号："+list);//发牌//3.1定义4个集合，分别表示3个玩家，底牌List<Integer>dipai=newArrayList<>();
List<Integer>zhaoyun=newArrayList<>();
List<Integer>caocao=newArrayList<>();
List<Integer>liubei=newArrayList<>();
//3.2具体的发牌动作，将索引和3取余，决定发给谁for(inti=0;i<list.size();i++){
//获取编号IntegerpokerNum=list.get(i);
if(i>=list.size()-3){
//底牌idipai.add(pokerNum);
            }elseif(i%3==0){
zhaoyun.add(pokerNum);
            }elseif(i%3==1){
caocao.add(pokerNum);
            }elseif(i%3==2){
liubei.add(pokerNum);
            }
        }
//查看具体的牌System.out.println("-------------------------------");
System.out.println("斗地主在线洗牌发牌：");
System.out.println("赵云:"+printPoker(zhaoyun,pokers));
System.out.println("曹操:"+printPoker(caocao,pokers));
System.out.println("刘备:"+printPoker(liubei,pokers));
System.out.println("底牌:"+printPoker(dipai,pokers));
    }
/*4.定义一个方法看牌方法名：printPoker参数列表:List<Integer>,Map<Integer,String>;返回值:String*/publicstaticStringprintPoker(List<Integer>nums,Map<Integer,String>pokers){
//1.对牌的编号进行升序排列Collections.sort(nums);
//2.遍历牌的编号集合，获取每一个编号StringBuildersb=newStringBuilder();
for (Integernum : nums) {
//num就是要查找具体牌的编号//3.根据编号去双列集合中查找该编号对应的具体牌Stringpoker=pokers.get(num);
//4.将获取到的牌进行拼接sb.append(poker+" ");
        }
//5.将最后的拼接的结果返回即可Stringstr=sb.toString();
returnstr.trim();
    }
}