吃货联盟java代码简单 吃货联盟啥意思

基础通过数组、选择结构、循环等实 现吃货联盟订餐系统。

1、我要订餐；

2、查看餐袋；

3、签收订单；

4、删除订单；

5、我要点赞；

6、退出系统；

public class Doy001 {
 public static void main(String[] args) {
 Scanner input = new Scanner(System.in);
 String[] names = new String[4];
 String[] dishMegs = new String[4];
 int[] times = new int[4];
 String[] addresses = new String[4];
 int[] states = new int[4];
 double[] sumPrices = new double[4];
 names[0] = “wuli丫头”;
 dishMegs[0] = “汉堡2份”;
 times[0] = 12;
 addresses[0] = “青年路”;
 sumPrices[0] = 76.0;
 states[0] = 1;
 // 第二条订单信息
 names[1] = “wuli小仙女”;
 dishMegs[1] = “脆皮鸡2份”;
 times[1] = 18;
 addresses[1] = “石佛营东里”;
 sumPrices[1] = 45.0;
 states[1] = 0;
 // 菜品信息
 String[] dishNames = { “汉堡”, “脆皮鸡”, “柠檬水” };
 double[] prices = new double[] { 38.0, 20.0, 10.0 };
 int[] praiseNums = new int[3];
 int num = -1;
 boolean flag = false;
 System.out.println(“欢迎使用“吃货联盟订餐系统””);
 // 进入循环
 do {
 // 菜单
 System.out.println(“");
 System.out.println(“1、我要订餐”);
 System.out.println(“2、查看餐袋”);
 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：”);
 int choose = input.nextInt();// 输入编号
 switch (choose) {
 case 1:
 System.out.println(“我要订餐”);
 boolean isAdd = false;
 for (int i = 0; i < names.length; i++) {
 if (names[i] == null) {
 isAdd = true;
 System.out.print(“请输入订餐人姓名：”);
 String name = input.next();
 // 菜品信息
 System.out.println(“序号” + “\t” + “菜名” + “\t” + “单价”);
 for (int j = 0; j < dishNames.length; j++) {
 String price = prices[j] + “元”;
 String praiseNum = (praiseNums[j] > 0) ? praiseNums[j]
 + “赞”
 : “0”;
 System.out.println((j + 1) + “\t” + dishNames[j]
 + " \t" + price);
 }
 // 点菜
 System.out.print(“请您选择要点的菜品编号：”);
 int chooseDish = input.nextInt();
 System.out.print(“请选择您需要的份数：”);
 int number = input.nextInt();
 String dishMeg = dishNames[chooseDish - 1] + " "
 + number + “份”;
 double sumPrice = prices[chooseDish - 1] * number;
 double deliCharge = (sumPrice >= 50) ? 0 : 5;// 满50免送餐费
 System.out.print(“请输入送餐时间(送餐时间是10点至20点间整点送餐)：”);
 int time = input.nextInt();
 while (time < 10 || time > 20) {
 System.out.print(“您输入的时间有误，请输入10~20间的整数！”);
 time = input.nextInt();
 }
 // 订单信息
 System.out.print(“请输入送餐地址：”);
 String address = input.next();
 System.out.println(“订餐成功！”);
 System.out.println(“您订的是：” + dishMeg);
 System.out.println(“送餐时间是：” + time + “点”);
 System.out.println(“餐费” + sumPrice + “元,送餐费”
 + deliCharge + “元，总计：”
 + (sumPrice + deliCharge) + “元”);
 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，您的餐袋已满！”);
 }
 break;
 case 2:// 查看餐袋
 System.out.println(“查看餐袋”);
 System.out.println(“序号\t订餐人\t餐品信息\t\t送餐日期”
 + “\t送餐地址\t\t总金额\t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] + “日”;
 String sumPrice = sumPrices[i] + “元”;
 System.out.println((i + 1) + “\t” + names[i] + “\t”
 + dishMegs[i] + “\t” + date + “\t”
 + addresses[i] + “\t” + sumPrice + " \t"
 + 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 choose1 = input.nextInt();
 for (int i = 0; i < names.length; i++) {
 if (names[i] != null && states[i] == 0 && choose1 == i + 1) {
 states[i] = 1;
 System.out.println(“订单签收成功！”);
 isSignFind = true;
 } else if (names[i] != null && states[i] == 1
 && choose1 == i + 1) {
 System.out.println(“您选择的订单已完成签收，不能再次签收！”);
 isSignFind = true;
 }
 }
 if (!isSignFind) {
 System.out.println(“您选择的订单不存在！”);
 }
 break;
 case 4:// 删除订单
 System.out.println(“签收订单”);
 boolean isdelFind = false;// 是否删除找到的订单
 System.out.print(“请输入要删除的订单序号：”);
 int choose2 = input.nextInt();
 for (int i = 0; i < names.length; i++) {
 if (names[i] != null && states[i] == 1 && choose2 == i + 1) {
 isdelFind = true;// 已找到订单
 // 删除操作，删除后的元素依次后移
 for (int j = choose2 - 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];
 sumPrices[j] = sumPrices[j + 1];
 }
 // 最后一位清空
 int endindex = names.length - 1;
 names[endindex] = null;
 dishMegs[endindex] = null;
 times[endindex] = 0;
 addresses[endindex] = null;
 states[endindex] = 0;
 sumPrices[endindex] = 0;
 System.out.println(“删除订单成功！”);
 break;
 } else if (names[i] != null && states[i] == 0
 && choose2 == i + 1) {
 System.out.println(“您选择的订单未签收，不能删除！”);
 isdelFind = true;// 已找到订单
 }
 }
 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****");
                    // 展示菜品信息
                    System.out.println("序号" + "\t" + "菜名" + "\t" + "单价");
                    for (int i = 0; i < dishNames.length; i++) {
                        String price = prices[i] + "元";
                        String praiseNum = (praiseNums[i] > 0) ? praiseNums[i]
                                + "赞" : "0";
                        System.out.println((i + 1) + "\t" + dishNames[i] + "\t"
                                + price + "\t" + praiseNum);
                    }
                    System.out.print("请选择您要点赞的菜品序号：");
                    int choose3 = input.nextInt();
                    praiseNums[choose3 - 1]++;
                    System.out.println("点赞成功！");
                    break;
                case 6:// 退出系统
                    flag = true;
                    break;
                default:
                    // 退出系统
                    flag = true;
                    break;
                }
                if (!flag) {
                    System.out.print("输入0返回！");
                    num = input.nextInt();
                } else {
                    break;
                }
            } while (num == 0);
            System.out.println("谢谢使用。欢迎下次光临！");
        

    
    
    
    
}

}