吃货商场

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import java.util.Scanner;
 
public class eattingShop {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        //--------------------------------------------------------------------------------------------------------------
        //订餐人
        String names[]= new String[4];
        //订餐信息
        String dishMegs[] = new String[4];
        //时间
        int times[] = new int[4];
        //地址
        String address[] = new String[4];
        //状态
        int status[] = new int[4];//0:完成 1：预定
        //价格
        double prices[] = new double[4];
        //--------------------------------------------------------------------------------------------------------------
        //给数组一个初始值
        names[0] = "张三";
        dishMegs[0] = "鱼香肉丝";
        times[0] = 12;
        address[0] = "半圆";
        status[0] = 1;
        prices[0] = 13;
 
        names[1] = "李四";
        dishMegs[1] = "西红柿炒鸡蛋";
        times[1] = 12;
        address[1] = "教室";
        status[1] = 0;
        prices[1] = 15;
        //--------------------------------------------------------------------------------------------------------------
        //声明菜单数组
        //菜名
        String dishMeg[] = {"红烧带鱼","西红柿炒蛋","剁椒鱼头"};
        //价格
        double price[] = {38,22,56};
        //点赞数量
        int zan[] = new int[4];
        //--------------------------------------------------------------------------------------------------------------
        boolean isExit = false;
        int m;
        System.out.println("欢迎使用吃货商场系统");
        do {
            System.out.println("*****************");
            System.out.println("1、我要订餐");
            System.out.println("2、查看餐代");
            System.out.println("3、签收订单");
            System.out.println("4、删除订单");
            System.out.println("5、我要点赞");
            System.out.println("6、退出系统");
            System.out.println("****************");
            System.out.print("请选择：");
            m=1;
            //isMan代表菜单是否满了，我们给他的默认值是没有。
            boolean isMan = false;
            //定义一个名为isFind的布尔值，默认为false就是找不到编号，如果for中找到了合适的值；则将其赋值ture
            boolean isFind = false;
            //定义布尔值，用来判断case4中如果找不到用户输入数据的情况。
            boolean isDel = false;
 
            int choose = input.nextInt();
            switch (choose){
                //------------------------------------------------------------------------------------------------------
                case 1:
                    System.out.println("**我要订餐**");
                    for (int i=0;i<names.length;i++){
                        //这里需要判断name数组里的满足有没有溢出，如果没有才可以继续
                        if (names[i]==null){
                            isMan = true;
                            System.out.print("请输入订餐人姓名：");
                            String name = input.next();
                            //遍历菜单
                            System.out.println("序号\t菜品\t单价(元)\t点赞数");
                            for (int j=0;j<dishMeg.length;j++){
                                //输出菜单
                                System.out.println((j+1)+"\t"+dishMeg[j]+"\t"+price[j]+"\t"+zan[j]);
                            }
                            System.out.print("请选择菜品编号：");
                            int caiBianHao = input.nextInt();
                            //dish为菜名字
                            String dish = dishMeg[caiBianHao-1];
 
                            //填写份数
                            System.out.print("份数：");
                            int fenShu = input.nextInt();
 
                            //计算价格有两个1：菜价2：运输费
                            double pri = price[caiBianHao-1];
                            double p = pri>50 ? 0 : 5;
 
                            //送餐时间
                            System.out.println("送餐时间（10~20点）");
                            int time = input.nextInt();
                            while (time<10 || time>20){
                                System.out.println("sorry,不在送餐时间内，重新输入：");
                                //重新输入
                                time = input.nextInt();
                            }
 
                            //地址的输入
                            System.out.println("地址：");
                            String addre = input.next();
                            System.out.println("订餐成功");
 
                            //输出填写的菜单信息
                            System.out.println("您定的是："+dish+fenShu+"份");
                            System.out.println("送餐时间是："+time+"时");
                            System.out.println("总费用为："+pri+"快递费为："+p+"总计："+(pri+p)+"元");
 
                            //将点单信息添加到餐代数组中
                            names[i] = name;
                            dishMegs[i] = dish;
                            times[i] = time;
                            //默认给1为已预定
                            status[i] = 1;
                            address[i] = addre;
                            prices[i] = pri+p;
                            break;
                        }
                    }
                    //判断如果满了，这里isMan的默认值为false 则取反
                    if (!isMan){
                        System.out.println("不好意思，餐袋已满");
                    }
                    break;
                //------------------------------------------------------------------------------------------------------
                case 2:
                    System.out.println("**查看餐代**");
                    System.out.println("序号\t订餐人\t餐品信息\t送餐日期\t地址\t总金额\t状态");
                    //遍历names数组
                    for (int i=0;i<names.length;i++){
                        if (names[i]!=null){
                            //打印餐代内容
                            String time = times[i]+"时";
                            String pric = prices[i]+"时";
                            String sta = status[i]==0?"已完成":"已预定";
                            System.out.println((i+1)+"\t"+names[i]+"\t"+dishMegs[i]+"\t"+time+"\t"+address[i]+"\t"+pric+"\t"+sta+"\t");
                        }
                    }
                    break;
                //------------------------------------------------------------------------------------------------------
                case 3:
                    System.out.println("**签收订单**");
                    System.out.println("请输入需要签收的订单序号：");
                    int qianShou = input.nextInt();
                    //遍历names数组找到所有订单的信息判断订单状态输出相应语句
                    for (int i=0;i<names.length;i++){
                        //判断name不为空，且状态是预约状态，并且和输入的签收单号一致
                        if (names[i]!=null && status[i]==1 && qianShou == i+1){
                            isFind = true;
                            System.out.println("签收完成");
                            //else if用来判断订单状态为已签收
                        }else if(names[i]!=null && status[i]==0 && qianShou == i+1){
                            isFind = true;
                            System.out.println("已经签收不可重复签收");
                        }
                    }
                    if (!isFind){
                        System.out.println("不好意思 没找到您需要签收的订单");
                    }
                    break;
                //------------------------------------------------------------------------------------------------------
                case 4:
                    System.out.println("**删除订单**");
                    System.out.println("请输入删除订单的序号：");
                    int del = input.nextInt();
                    //遍历数组的内容
                    for (int i = 0;i<names.length;i++){
                        //判断删除条件，必须是有值，且状态为未完成，且下标要和输入的del-1相对应！
                        if (names[i]!=null && status[i]==0 && del==i+1){
                            //进入if循环就代表已经找到数据了则将isdel赋值为true
                            isDel = true;
                            //删除：从输入的del-1的下标开始到末尾结束length-1
                            for (int j=del-1;j<names.length-1;j++){
                                //将被删除数据的下一个数据挪到被删除数据的下标空间中
                                names[j]=names[j+1];
                                dishMegs[j]=dishMegs[j+1];
                                times[j]=times[j+1];
                                address[j]=address[j+1];
                                status[j]=status[j+1];
                                prices[j]=prices[j+1];
                            }
                            //数据转移结束后，出现倒数第二和倒数第一个数据是一样的，则需要将最后一个数据赋值为空。
                            names[names.length-1]=null;
                            dishMegs[names.length-1]=null;
                            times[names.length-1]=0;
                            address[names.length-1]=null;
                            status[names.length-1]=0;
                            prices[names.length-1]=0;
                            System.out.println("删除成功！");
                            break;
                            //在else if 中需要判断数据状态为未完成时的情况
                        }else if (names[i]!=null && status[i]==1 && del==i+1){
                            isDel = true;
                            System.out.println("订单还未完成！不能删除！");
                            break;
                        }
                    }
                    //判断如果没有找到则输出不存在
                    if (!isDel){
                        System.out.println("您需要删除的订单不存在");
                    }
                    break;
                //------------------------------------------------------------------------------------------------------
                case 5:
                    System.out.println("**我要点赞**");
                    System.out.println("序号\t菜品\t单价（¥）\t点赞数\t");
                    for (int j=0;j<dishMeg.length;j++){
                        System.out.println((j+1)+"\t"+dishMeg[j]+"\t"+price[j]+"\t"+zan[j]+"\t");
                    }
                    System.out.println("请选择需要点赞商品的编号：");
                    int n = input.nextInt();
                    zan[n-1]++;
                    System.out.println("点赞成功！！");
                    break;
                //------------------------------------------------------------------------------------------------------
                case 6:
                    System.out.println("**退出系统**");
                    isExit = true ;
                    break;
                //------------------------------------------------------------------------------------------------------
                default:
                    System.out.println("**退出系统**");
                    isExit = true;
                    break;
            }
            //----------------------------------------------------------------------------------------------------------
            if (!isExit){
                System.out.print("输入0返回（若输入其他数则结束系统）：");
                m = input.nextInt();
            }
        }while(m == 0);
    }
}