感觉纯粹就是暴力法
Topic source
switch (choice) { case 1, 2, 3 -> { if (random == choice % 3 + 1) { System.out.println("赢"); } else if (random == choice) { System.out.println("平"); } else { System.out.println("输"); } } default -> { System.out.println("wrong"); }}
switch (choice) {
case 1, 2, 3 -> {
if (random == choice % 3 + 1) {
System.out.println("赢");
} else if (random == choice) {
System.out.println("平");
} else {
System.out.println("输");
}
}
default -> {
System.out.println("wrong");
}
}
- 1
王上进要上进001
package com.itranswarp.learnjava;
import java.util.Scanner;
/**
* switch实现石头/剪子/布并判断胜负
*/
public class Main {
public static void main(String[] args) {
System.out.println("please choice:");
System.out.println(" 1: Rock");
System.out.println(" 2: Scissors");
System.out.println(" 3: Paper");
// 用户输入:
while (true) {
int choice = 0;
Scanner scanner = new Scanner(System.in);
System.out.print("your choice:");
choice = scanner.nextInt();
// 计算机随机数 1, 2, 3:
int a =(int) (Math.random() * 3);
int random = 1 + a;
switch (random) {
case 1 -> System.out.println("your competitor is: " + random + ":Rock.");
case 2 -> System.out.println("your competitor is: " + random + ":Scissors.");
case 3 -> System.out.println("your competitor is: " + random + ":Paper.");
}
switch (choice) {
// TODO:
case 1:
if (random > 1) {
System.out.println("you fail");
break;
} else if (random == 1) {
System.out.println("draw, do it again.");
break;
}
case 2:
if (random > 2) {
System.out.println("you fail");
break;
} else if (random == 2) {
System.out.println("draw, do it again.");
break;
} else {
System.out.println("you win");
break;
}
case 3:
if (random == 3) {
System.out.println("draw, do it again.");
break;
} else {
System.out.println("you win");
break;
}
}
}
}
}