吃货联盟

public class eat {public static void main(String[] args) {Scanner input = new Scanner(System.in);String[] names = new String[4]; // 订餐人名字String[] dishMegs = new String[4]; // 保存所选的信息,包括菜品名及份数int[] times = new int[4]; // 保存订餐时间double[] sumPrices = new double[4]; // 订餐总金额String[] addresses = new String[4]; // 送餐地址int[] states = new int[4]; // 保存订单状态:0.表示已预订,1.表示已完成
names[0] = "张晴";dishMegs[0] = "红烧带鱼2份";times[0] = 12;addresses[0] = "天成路207号";sumPrices[0] = 76.0;states[0] = 1;// 初始化第二条信息names[1] = "张晴";dishMegs[1] = "红烧带鱼2份";times[1] = 18;addresses[1] = "天成路207号";sumPrices[1] = 76.0;states[1] = 0;String[] dishNames = { "红烧带鱼", "鱼香肉丝", "时令鲜蔬" }; // 菜品名称double[] prices = new double[] { 38.0, 20.0, 10.0 }; // 菜品单价int[] praiseNums = new int[3];int num = -1; // 用户输入0返回主菜单，否则退出系统boolean isExit = false; // 标志用户是否退出系统： true:退出系统
System.out.println("\n欢迎使用“吃货联盟订餐系统”");int number = 0;do {System.out.println("欢迎进入吃货联盟订餐系统");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.println("请选择:");num = input.nextInt();switch (num) {case 1:boolean isAdds = false;String name = "";for (int j = 0; j < names.length; j++) {if (names[j] == null) { // 添加订单信息isAdds = true;System.out.println("请输入订餐人名字:");name = input.next();// 显示菜单信息System.out.println("序号" + "\t" + "菜名" + "\t" + "单价"+ "\t" + "点赞数");for (int i = 0; i < dishNames.length; i++) {String price = prices[i] + "元";String priaiseNums = (praiseNums[i]) > 0 ? praiseNums[i]+ "赞": "0";System.out.println((i + 1) + "\t" + dishNames[i]+ "\t" + price + "\t" + priaiseNums);}// 用户点菜System.out.println("请选择您要点的菜品编号");int chooesDish = input.nextInt();System.out.println("请选择你需要的份数:");int numbers = input.nextInt();String dishMeg = dishNames[chooesDish - 1] + " "+ numbers + "份";double sumPrice = prices[chooesDish - 1] * numbers; // 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点到20点间整点送餐):");int time = input.nextInt();while (time < 10 || time > 20) {System.out.println("您输入有误,请输入10~20间的整数!");time = input.nextInt();}System.out.println("请输入送货餐地址:");String addresses1 = input.next();System.out.println("订餐成功!");System.out.println("您订的是:" + dishMeg);System.out.println("您的送餐时间:" + time + "点");System.out.println("餐费:" + sumPrice + "元,送餐费"+ deliCharge + "元,总计:"+ (sumPrice + deliCharge) + "元");names[j] = name;dishMegs[j] = dishMeg;times[j] = time;addresses[j] = addresses1;sumPrices[j] = sumPrice + deliCharge;break;}}if (!isAdds) {System.out.println("对不起,您的餐袋已满!");isAdds = false;} else {isAdds = true;}break;case 2: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) ? "已预定" : "已完成";String day = times[i] + "日";String sumPrice1 = sumPrices[i] + "元";System.out.println((i + 1) + "\t" + names[i] + "\t"+ dishMegs[i] + "\t" + day + "\t"+ addresses[i] + "\t" + sumPrice1 + "\t"+ state);}}break;case 3:boolean isadd = false; // 找到签收订单System.out.println("请选择你要签收的订单:");int isgnorderid = input.nextInt();for (int i = 0; i < names.length; i++) {if (names[i] != null && states[i] == 0&& isgnorderid == i + 1) {states[i] = 1; // 将状态置为完成System.out.println("订单签收成功!");isadd = true; // 标记已找到账单} else if (names[i] != null && states[i] == 1&& isgnorderid == i + 1) {System.out.println("您选择的订单已完成签收,不能再次签收!");isadd = true; // 标记已找到此账单
                    }}if (!isadd) {System.out.println("您选择的账单不存在!");}break;case 4:boolean isAdd = false; // 删除订单// 标记是否找到要删除的订单System.out.println("请选择要删除的订单:");int delId = input.nextInt();for (int i = 0; i < names.length; i++) {if (names[i] != null && states[i] == 1&& delId == i + 1) {isAdd = true; // 找到订单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];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&& delId == i + 1) {System.out.println("您选择的订单未签收,不能删除!");isAdd = true; // 标记已找到账单break;}}if (!isAdd) {System.out.println("您要删除的账单不存在!");}break;case 5:System.out.println("序号" + "\t" + "菜名" + "\t" + "单价" + "\t");for (int i = 0; i < dishNames.length; i++) {String price = prices[i] + "元";String priaiseNum = (praiseNums[i]) > 0 ? praiseNums[i]+ "赞" : "";System.out.println((i + 1) + "\t" + dishNames[i] + "\t"+ price + "\t" + priaiseNum);}System.out.println("请选择您要点赞的菜品序号:");int priaiseNum = input.nextInt();praiseNums[priaiseNum - 1]++; // 赞数加一System.out.println("点赞成功!");break;case 6:isExit = true;break;default:// 退出系统isExit = true;break;}if (!isExit) {System.out.print("输入0返回：");num = input.nextInt();} else {break;}} while (num == 0);System.out.println("退出系统,谢谢使用!");}
}