吃货联盟

package Game;

import java.util.Scanner;

public class Chihuo {
    static Scanner sc = new Scanner(System.in);
    public static void main(String[] args) {
        String [] names = new String[4];//保存订餐人姓名
        String [] dishMegs = new String[4];//菜名
        int [] times = new int[4];//送餐时间
        String [] addresses = new String[4];//送餐地址
        int [] states = new int[4];//订单状态：0表示已经预定，1表示已经完成
        double [] sumPrices = new double[4];//订单总金额
        double []prices = {15.0,20.9,18.0};
        int [] zans = new int[3];//点赞数
        String [] food = {"小炒肉","尖椒牛肉","红烧肉"};
        
        
        //初始化第一条订单信息
        names[0] = "小李";
        dishMegs[0] = "小炒肉1份";
        times[0] = 10;
        addresses[0] = "观日路48号";
        states[0] = 1;
        sumPrices[0] = 15.0;
        //初始化第二条订单信息
        names[1] = "小王";
        dishMegs[1] = "尖椒牛肉1份";
        times[1] = 18;
        addresses[1] = "会展路100号";
        states[1] = 0;
        sumPrices[1] = 20.9;
        int num = -1;
        boolean isExit = false;
        System.out.println("
 欢迎使用“吃货联盟订餐系统”");
        do {
            System.out.println("***********************");
            System.out.println("1、我要订餐
" + "2、查看菜单
" + "3、签收订单
" + "4、删除订单
" + "5、我要点赞
" + "6、退出系统");
            System.out.println("***********************");
            System.out.println("请选择：");
            int choose = sc.nextInt();
            switch(choose) {
            case 1:
                //我要订餐
                System.out.println("*****我要订餐*****");
                boolean isAdd = false;//记录是否可以订餐
                for(int i = 0;i<names.length;i++) {
                    if(names[i]==null) {
                        isAdd = true;
                        System.out.println("订餐人姓名为：");
                        String name = sc.next();
                        //显示提供选择菜品信息
                        System.out.println("序号	" + "菜名	" + "单价	" + "点赞数");
                        for(int j =0;j<food.length;j++) {
                            String price = prices[j]+"元";
                            String zan = zans[j] > 0?zans[j]+"赞":"0";
                            System.out.println((j+1)+"	"+food[j]+"	"+price+"	"+zan);
                            
                        }
                        //用户点菜
                        System.out.print("请选择你要点的菜品编号：");
                        int chooseDish = sc.nextInt();
                        System.out.println("你要点的份数");
                        int fenshu = sc.nextInt();
                        String dishMeg = food[chooseDish-1]+""+fenshu+"份";
                        double sumPrice = prices[chooseDish-1]*fenshu;
                        //餐费满50元，免送餐费5元
                        double deliCharge = (sumPrice>=50)?0:5;
                        
                        System.out.println("请输入送餐时间（送餐时间是10点至20点间整点送餐)：");
                        int time = sc.nextInt();
                        while(time<10||time>20) {
                            System.out.println("你的输入有误，请输入10-20间的整数！");
                            time = sc.nextInt();
                        }
                        System.out.println("请输入送餐地址：");
                        String address = sc.next();
                        System.out.println("订餐成功！");
                        System.out.println("您订的是："+dishMeg);
                        System.out.println("送餐时间："+time+"点");
                        System.out.println("餐费："+sumPrice+"元，送餐费"+deliCharge+"元，总计："+(sumPrice+deliCharge)+"元。");
                        
                        
                        //添加数据
                        names[i] = name;
                        dishMegs[i] = dishMeg;
                        times[i] = time;
                        addresses[i] = address;
                        sumPrices[i] = sumPrice+ deliCharge;
                        break;
                    }
                    
                }
                if(!isAdd) {
                    System.out.println("对不起你的菜单已满！");

                }
                break;
            case 2:
                //查看菜单
                System.out.println("*****查看菜单*****");
                System.out.println("序号		订餐人		所订餐品			送餐时间		送餐地址				总金额		订单状态");
                for(int i=0;i<names.length;i++) {
                    if(names[i]!=null) {
                        String state = (states[i]==0)?"已预订":"已完成";
                        String date = times[i]+"点";
                        String sumPrice = sumPrices[i]+"元";
                        System.out.println((i+1)+"		"+names[i]+"		" + dishMegs[i]+"		"+date+"		"+addresses[i]+"			"+"	"  +sumPrice+"		" +state);
                    }
                }
                break;
            case 3:
                //签收订单
                System.out.println("*****签收订单*****");
                boolean isSignFind = false;//找到要签收的订单
                System.out.print("请选择要签收的订单序号：");
                int signOrderld = sc.nextInt();
                for(int i=0;i<names.length;i++) {
                    //状态为已预订，序号为用户输入的订单序号减一：可签收
                    //状态为已完成，序号为用户输入的订单序号减一：不可签收
                    if(names[i]!=null&&states[i]==0&&signOrderld==i+1) {
                        states[i] = 1;//将状态值设置为已完成
                        System.out.println("订单签收成功！");
                        isSignFind= true;//标记已找到此订单
                    }else if (names[i]!=null&&states[i]==1&&signOrderld==i+1) {
                        System.out.println("你选择的订单已经签收。不可再签收");
                        isSignFind = true;
                    }
                }
                //未找到的订单：不可签收
                if(!isSignFind) {
                    System.out.println("你选择的订单不存在！");
                }
                break;
            case 4:
                //删除订单
                System.out.println("*****删除订单*****");
                boolean isDelFind = true;
                System.out.print("请输入要删除的订单序号:");
                int delId = sc.nextInt();
                for(int i=0;i<names.length;i++){
                    //状态值为已完成  序号值为用户输入的序号：可删除
                    //状态值为已预定  序号值为用户输入的序号：不可删除
                    if(names[i]!=null && states[i]==1 && delId==i+1){    
                         isDelFind = true;
                        //执行删除操作:删除位置后的元素依次前移
                        for(int j=delId-1;j<names.length-1;j++){
                            names[j] = names[j+1];
                            dishMegs[j] = dishMegs[j+1];
                            times[j] = times[j+1];
                            addresses[j] = addresses[j+1];
                            states[j] = states[j+1];
                        }
                        //最后一位清空
                        names[names.length-1] = null;
                        dishMegs[names.length-1] = null;
                        times[names.length-1] = 0;
                        addresses[names.length-1] = null;
                        states[names.length-1] = 0;
                        
                        System.out.println("删除订单成功！");
                        break;
                    }else if(names[i]!=null && states[i]==0 && delId==i+1){
                        System.out.println("您选择的订单未签收，不能删除！");
                        isDelFind = true;
                        break;
                    }
                }
                
                //未找到该序号的订单：不能删除
                if(!isDelFind){
                    System.out.println("您要删除的订单不存在！");
                };
                
                break;
            case 5:
                //我要点赞
                System.out.println("*****我要点赞*****");
                // 显示菜品信息
                System.out.println("序号" + "	" + "菜名"+"	"+"单价");
                for (int i = 0; i < food.length; i++) {
                    String price = prices[i] + "元";
                    String priaiseNum = (zans[i]) > 0 ? zans[i]
                            + "赞" : "";
                    
                    System.out.println((i + 1) + "	" + food[i] + "	"    +price+"	"+ priaiseNum);
                }
                System.out.print("请选择您要点赞的菜品序号：");
                int priaiseNum = sc.nextInt();
                zans[priaiseNum-1]++;  //赞数加1
                System.out.println("点赞成功！");
                break;
            case 6:
                //退出系统
                isExit = true;
                System.out.println("谢谢使用，欢迎下次光临！！");
                break;
            default:
                //退出系统
                isExit = true;
                break;
                
            }
            if(!isExit) {
                System.out.println("输入0返回：");
                num = sc.nextInt();    
            }else {
                
                break;
            }
                    
        }while(num==0);
        
            
        
                
        
    }
     

}

输出结果