Question

这是学校的作业。这是指令：编写一个播放流行剪刀 - 岩纸游戏的程序。该程序随机生成数字1,2和3，代表剪刀，岩石和纸张。程序提示用户输入数字1,2和3，并显示一条消息，指示用户或计算机是赢，输还还是抽奖。程序应该让用户持续玩，直到用户或计算机赢得的次数超过对手的两倍。

我已经使用运行的java创建了一个但是想知道是否有更短的编写方式......

这是我写的：

import java.util.Scanner;
public class NumberOne{
public static void main(String[] args){
    Scanner n = new Scanner(System.in);
    int comp, player;
    int point = 1, pointCom = 0, pointPlayer = 0;

    System.out.println("This is a game of Scissor-Rock-Paper.\n");

    while((pointPlayer != 3) && (pointCom != 3)){
        System.out.println("\nEnter 1 for Scissor\nEnter 2 for Rock\nEnter 3 for Paper");
        player = n.nextInt();
        comp = (1 + (int)(Math.random() * 3));

        if ((comp == 1) && (player == 3)){
            System.out.println("Scissor vs Paper.\nYou lose!");
            pointCom += point;}
        else if ((comp == 2) && (player == 1)){
            System.out.println("Rock vs Scissor.\nYou lose!");
            pointCom += point;}
        else if ((comp == 3) && (player == 2)){
            System.out.println("Paper vs Rock.\nYou lose!");
            pointCom += point;}
        else if ((comp == 1) && (player == 2)){
            System.out.println("Scissor vs Rock.\nYou win!");
            pointPlayer += point;}
        else if ((comp == 2) && (player == 3)){
            System.out.println("Rock vs Paper.\nYou win!");
            pointPlayer += point;}
        else if ((comp == 3) && (player== 1)){
            System.out.println("Paper vs Scissor.\nYou win!");
            pointPlayer += point;}
        else if ((comp == 1) && (player == 1)){
            System.out.println("Scissor vs Scissor.\nIt's a draw!");}
        else if ((comp == 2) && (player == 2)){
            System.out.println("Rock vs Rock.\nIt's a draw!");}
        else if ((comp == 3) && (player == 3)){
            System.out.println("Paper vs Paper.\nIt's a draw!");}
        else
            System.out.println("You can only choose between 1, 2, and 3...");
    }
    if (pointCom >= 3)
        System.out.println("\nYou LOST...");
    else if (pointPlayer >= 3)
        System.out.println("\nYou WON...");

}
}

Answer 1

而不是使用常量System.out.println()

你可以制作两个String变量。因为“你输了”和“你赢了”

也用于剪刀和纸张等的内容。制作一个名为String Array的字符串 “武器”或那种性质的东西，以便您可以像这样在阵列中调用它们：

    if weapons.contains("paper"){
return (the you won or you lose variable)

}

Answer 2

也许是这样的：

String compMove, playerMove;
switch (player) {
    case 1: playerMove = "Scissor";break;
    case 2: playerMove = "Rock";break;
    case 3: playerMove = "Paper";break;
}

switch (comp) {
    case 1: compMove = "Scissor";break;
    case 2: compMove = "Rock";break;
    case 3: compMove = "Paper";break;
}

System.out.print(playerMove + " vs. " + compMove);

//check for winner

Answer 3

我建议将Enum类用于摇滚，纸张，剪刀。然后比较一个比较器，因为它看起来更干净，更具可读性。

public Enum Game {
  ROCK(0), PAPER(1), SCISSORS(2);
  private final int index;
  Game(int index) {
  this.index = index;
  }
  public int getIndex() {
  return index;
  }
  public static Game getGame(int index) {
    for (Game g : Game.values()) {
        if (g.getIndex() == index) {
            return g;
        }
    }
    return null;
  }
}

比较课程：

public class MyEnumComparator implements Comparator<Game>
{
  public int compare(Game o1, Game o2)
  {
    if(o1 == o2) {
        return 0;
    }

    if(o1 == Game.ROCK) {
        return o2 == Game.PAPER ? -1 : 1;
    }

    if(o1 == Game.PAPER) {
        return o2 == Game.SCISSORS ? -1 : 1;
    }

    if(o1 == Game.SCISSORS) {
        return o2 == Game.ROCK ? -1 : 1;
    }
  }
}

然后你的主要课程将是这样的：

import java.util.Scanner;
public class NumberOne {
  public static void main(String[] args){
    Scanner n = new Scanner(System.in);
    int comp, player;
    int point = 1, pointCom = 0, pointPlayer = 0;

    System.out.println("This is a game of Scissor-Rock-Paper.\n");
    MyEnumComparator comparator = new MyEnumComparator();

    while((pointPlayer != 3) && (pointCom != 3)){
      System.out.println("\nEnter 1 for Scissor\nEnter 2 for Rock\nEnter 3 for Paper");
      player = n.nextInt();
      compIndex = (1 + (int)(Math.random() * 3));
      Game me = Game.getGame(player);
      Game computer = Game.getGame(compIndex);
      // 0 means draw, 1 means you win, -1 means computer wins
      int result = comparator.compare(me, computer);

      if(result != 0) { 
        if(result == 1) { 
          pointPlayer++ 
        } else { 
        pointComp++ 
        } 
      }
    }
    if (pointCom >= 3)
      System.out.println("\nYou LOST...");
    else if (pointPlayer >= 3)
      System.out.println("\nYou WON...");
  }
}

编写一个使用循环播放剪刀 - 岩纸游戏的程序

3 个答案: