2021年4月22日星期四

Java基础练习——读心术(扑克牌魔术——21张扑克牌)

21张扑克牌小魔术——数学的魅力

Java基础练习——读心术(扑克牌魔术——21张扑克牌)

用到了Scanner,for循环,if-else语句,集合,线程的Thread.sleep()方法

话不多说,直接上代码!😎😎😎

欢迎大佬对代码进行优化,魔术原理请自行百度"21张扑克牌"(本文最后附带表演手法图片)。

import java.util.ArrayList;import java.util.Collections;import java.util.Scanner;public class CardMagic { public static void main(String[] args) {  //1.准备54张牌  //新建一个集合存储54张牌并打乱顺序  ArrayList<String> pokers = new ArrayList<>();  //直接定义两个数组并赋值,一个存四种花色,一个存13张牌的值(3,4,5,6,7,8,9,10,J,Q,K,A,2)  String[] kind = {"♥","♠","♦","♣"};  String[] number = {"3","4","5","6","7","8","9","10","J","Q","K","A","2"};  //先存大王小王到pokers集合中  pokers.add("大王");  pokers.add("小王");  //组装两个集合的数据,生成带花色的52张牌(可以用普通for循环,也可以用增强for循环foreach)  for (int i = 0; i < kind.length; i++) {   for (int j = 0; j < 13; j++) {    pokers.add(kind[i]+number[j]);   }  }  System.out.println("这里有54张牌:"+pokers);//顺序打印  //洗牌--打乱pokers集合里的元素顺序  Collections.shuffle(pokers);//打乱顺序  //再新建一个集合,用来存储随机拿出的21张牌(伪随机:其实是拿出前21张牌,但是pokers集合是随机打乱顺序的,所以每次运行程序,拿出的前21张牌也就不一样且乱序了)  ArrayList<String> list21 = new ArrayList<>();  for (int i = 0; i < 21; i++) {   list21.add(pokers.get(i));  }  //打印出这21张牌  System.out.println("随机取出21张扑克牌并打乱顺序:");  System.out.println(list21);  System.out.println("请选择任意一张扑克牌,并记住它。【输入小写字母'y'继续,输入其他任意字符结束游戏!】");  Scanner scanner1 = new Scanner(System.in);  if (scanner1.nextLine().equals("y")){   System.out.println("系统将这21张扑克牌均分为3叠,请等待...");   try {    Thread.sleep(3000);   } catch (InterruptedException e) {    e.printStackTrace();   }  }else {   System.exit(-1);  }  //定义3个集合,每个集合存储7张牌  ArrayList<String> card1 = new ArrayList<>();  ArrayList<String> card2 = new ArrayList<>();  ArrayList<String> card3 = new ArrayList<>();  for (int i = 0; i < 7; i++) {   card1.add(list21.get(i));  }  for (int i = 7; i < 14; i++) {   card2.add(list21.get(i));  }  for (int i = 14; i < 21; i++) {   card3.add(list21.get(i));  }  System.out.println("第1叠:"+card1);  System.out.println("第2叠:"+card2);  System.out.println("第3叠:"+card3);  //判断输入  try {   Thread.sleep(1000);  } catch (InterruptedException e) {   e.printStackTrace();  }  Scanner scanner2 = new Scanner(System.in);  System.out.println("请告诉我你记住的牌在第几叠~如果在第1叠请输入数字1;如果在第2叠请输入数字2;如果在第3叠请输入数字3");  System.out.println("请输入:");  //新建3个数组,分3次重新存重新按指定规则排序的21张牌  ArrayList<String> list21New1 = new ArrayList<>();  int a = scanner2.nextInt();  if (a==1){   for (int i = 0; i < 7; i++) {    list21New1.add(card2.get(i));   }   for (int i = 0; i < 7; i++) {    list21New1.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New1.add(card3.get(i));   }  }else if (a==2){   for (int i = 0; i < 7; i++) {    list21New1.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New1.add(card2.get(i));   }   for (int i = 0; i < 7; i++) {    list21New1.add(card3.get(i));   }  }else {   for (int i = 0; i < 7; i++) {    list21New1.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New1.add(card3.get(i));   }   for (int i = 0; i < 7; i++) {    list21New1.add(card2.get(i));   }  }  card1.clear();  card2.clear();  card3.clear();  for (int i = 0; i < 21; i++) {   card1.add(list21New1.get(i));   i++;   card2.add(list21New1.get(i));   i++;   card3.add(list21New1.get(i));  }  System.out.println("第1叠:"+card1);  System.out.println("第2叠:"+card2);  System.out.println("第3叠:"+card3);  //判断输入  try {   Thread.sleep(1000);  } catch (InterruptedException e) {   e.printStackTrace();  }  Scanner scanner3 = new Scanner(System.in);  System.out.println("请告诉我你记住的牌在第几叠~如果在第1叠请输入数字1;如果在第2叠请输入数字2;如果在第3叠请输入数字3");  System.out.println("请输入:");  int b = scanner3.nextInt();  //新建3个数组,分3次重新存重新按指定规则排序的21张牌  ArrayList<String> list21New2 = new ArrayList<>();  if (b==1){   for (int i = 0; i < 7; i++) {    list21New2.add(card2.get(i));   }   for (int i = 0; i < 7; i++) {    list21New2.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New2.add(card3.get(i));   }  }else if (b==2){   for (int i = 0; i < 7; i++) {    list21New2.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New2.add(card2.get(i));   }   for (int i = 0; i < 7; i++) {    list21New2.add(card3.get(i));   }  }else {   for (int i = 0; i < 7; i++) {    list21New2.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New2.add(card3.get(i));   }   for (int i = 0; i < 7; i++) {    list21New2.add(card2.get(i));   }  }  card1.clear();  card2.clear();  card3.clear();  for (int i = 0; i < 21; i++) {   card1.add(list21New2.get(i));   i++;   card2.add(list21New2.get(i));   i++;   card3.add(list21New2.get(i));  }  System.out.println("第1叠:"+card1);  System.out.println("第2叠:"+card2);  System.out.println("第3叠:"+card3);  //判断输入  try {   Thread.sleep(1000);  } catch (InterruptedException e) {   e.printStackTrace();  }  Scanner scanner4 = new Scanner(System.in);  System.out.println("请告诉我你记住的牌在第几叠~如果在第1叠请输入数字1;如果在第2叠请输入数字2;如果在第3叠请输入数字3");  System.out.println("请输入:");  //新建3个数组,分3次重新存重新按指定规则排序的21张牌  ArrayList<String> list21New3 = new ArrayList<>();  int c = scanner2.nextInt();  if (c==1){   for (int i = 0; i < 7; i++) {    list21New3.add(card2.get(i));   }   for (int i = 0; i < 7; i++) {    list21New3.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New3.add(card3.get(i));   }  }else if (c==2){   for (int i = 0; i < 7; i++) {    list21New3.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New3.add(card2.get(i));   }   for (int i = 0; i < 7; i++) {    list21New3.add(card3.get(i));   }  }else {   for (int i = 0; i < 7; i++) {    list21New3.add(card1.get(i));   }   for (int i = 0; i < 7; i++) {    list21New3.add(card3.get(i));   }   for (int i = 0; i < 7; i++) {    list21New3.add(card2.get(i));   }  }  System.out.println("好了,稍等片刻!让我猜猜你记住的是什么牌......");  try {   Thread.sleep(1000);  } catch (InterruptedException e) {   e.printStackTrace();  }  System.out.println("真相永远只有一个,你选的牌是"+list21New3.get(10)+"!");  System.out.println("什么?你说我是运气好?不!这是"魔法"!"); }}

值得一提的是,将21张扑克牌分成3组的具体操作,应该是:

​ 将21张扑克牌拿在手上,按顺序,从左到右依次发牌,每发3次算一轮,一共发七轮,发完就会产生3叠牌,每叠7张!😎😎😎


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21张扑克牌小魔术——数学的魅力Java基础练习——读心术(扑克牌魔术——21张扑克牌)用到了Scanner,for循环,if-else语句,集合,线程的Thread.sleep()方法话不多说,直接上代码!😎😎😎欢迎大佬对代码进行优化,魔术原理请自行百度"21张扑克牌"(本文最后附带表演手法图片)。importjava.util.ArrayList;importjava.util.Coll
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