剪刀,石頭,布(猜拳游戲)

package judgment;
import java.util.Scanner;
/**
 * 模擬剪刀,石頭,布,游戲
 */
public class Judgment {
 public static void main(String[] args) {
 int computer=(int)(Math.random()*3);
 Scanner input=new Scanner(System.in);
 System.out.println("你出什么?剪刀(1)/石頭(0)/布(2)");
 int user=input.nextInt();
 switch (computer){
 case 0: System.out.println("系統出的石頭"); break;
 case 1: System.out.println("系統出的剪刀"); break;
 case 2: System.out.println("系統出的布"); break;
 }
 if (computer==user){
 System.out.println("平局");
 }else if (computer-user==-1||computer-user==2){
 System.out.println("抱歉,您輸了");
 }else{
 System.out.println("恭喜你,你贏了");
 }
 }
}