北大青鸟 17章 吃货联盟订餐系统

public class OrderingSet {
	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[] sumPrice = new double[4];
}

 

 

import java.util.Scanner;

public class OrderingUtil {
	Scanner input = new Scanner(System.in);
	String[] dishNames = new String[] { "红烧带鱼", "鱼香肉丝", "时令鲜蔬" };
	double[] prices = new double[] { 38.0, 20.0, 10.0 };
	int[] praiseNums = new int[3];
	OrderingSet oSet = new OrderingSet();
	public void initial() {
		oSet.names[0] = "彭新宇";
		oSet.dishMegs[0] = "红烧牛肉 2份";
		oSet.times[0] = 3;
		oSet.addresses[0] = "深圳宝安";
		oSet.states[0] = 1;
		oSet.sumPrice[0] = 76.0;
		oSet.names[1] = "刘志绫";
		oSet.dishMegs[1] = "鱼香肉丝 2份";
		oSet.times[1] = 10;
		oSet.addresses[1] = "深圳宝安";
		oSet.states[1] = 0;
		oSet.sumPrice[1] = 45.0;
		System.out
				.println("name\tdishMegs\ttimes\taddresses\tstates\tsumPrices");
		System.out.println(oSet.names[0] + "\t" + oSet.dishMegs[0] + "\t"
				+ oSet.times[0] + "\t" + oSet.addresses[0] + "\t"
				+ oSet.states[0] + "\t" + oSet.sumPrice[0]);
		System.out.println(oSet.names[1] + "\t" + oSet.dishMegs[1] + "\t"
				+ oSet.times[1] + "\t" + oSet.addresses[1] + "\t"
				+ oSet.states[1] + "\t" + oSet.sumPrice[1]);
	}
 
	public void startMenu() {
		int num;
		boolean isExit = false;
		System.out.println("欢迎使用“吃货联盟订单系统”");
		do {
			System.out.println("***********************");
			System.out
					.println("1.我要订餐\n2.查看餐袋\n3.签收订单\n4.删除订单\n5.我要点赞\n6.退出系统");
			System.out.println("***********************");
			System.out.println("请选择:");
			num = input.nextInt();
			switch (num) {
			case 1:
				System.out.println("***我要订餐***");
				add();
				break;
			case 2:
				System.out.println("***查看餐袋***");
				display();
				break;
			case 3:
				System.out.println("***签收订单***");
				sign();
				break;
			case 4:
				System.out.println("***删除订单***");
				delete();
				break;
			case 5:
				System.out.println("***我要点赞***");
				praise();
				break;
			default:
				System.out.println("谢谢使用,欢迎下次光临!");
				isExit = true;
				break;
			}
			if (!isExit) {
				System.out.println("输入0返回:");
				num = input.nextInt();
			} else {
				break;
			}
		} while (num == 0);
	}
 
	public void display() {
		System.out.println("序号\t订餐人\t餐品信息\t\t送餐时间\t送餐地址\t\t总金额\t订单状态");
		for (int i = 0; i < oSet.names.length; i++) {
			if (oSet.names[i] != null) {
				String state = (oSet.states[i] == 0) ? "已预订" : "已完成";
				String date = oSet.times[i] + "点";
				String sumPrice = oSet.sumPrice[i] + "元";
				System.out.println((i + 1) + "\t" + oSet.names[i] + "\t"
						+ oSet.dishMegs[i] + "\t" + date + "\t"
						+ oSet.addresses[i] + "\t" + sumPrice + "\t" + state);
			}
		}
	}
 
	public boolean add() {
		boolean isAdd = false;
 
		for (int j = 0; j < oSet.names.length; j++) {
			if (oSet.names[j] == null) {
				isAdd = true;
				System.out.println("请输入订餐人姓名:");
				String name = input.next();
				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 priaiseNum = (praiseNums[i] > 0 ? praiseNums[i]
							+ "赞" : "0");
					System.out.println((i + 1) + "\t" + dishNames[i] + "\t"
							+ price + "\t" + priaiseNum);
				}
				System.out.println("请选择您要点的菜品编号:");
				int chooseDish = input.nextInt();
				System.out.println("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;
				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 = input.nextInt();
				while (time < 10 || time > 20) {
					System.out.println("您的输入有误,请输入10~20间的整数!");
					time = input.nextInt();
				}
				System.out.println("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:" + time + "点");
				System.out.println("餐费:" + sumPrice + "元,送餐费:" + deliCharge
						+ "总计:" + (+sumPrice+deliCharge) + "元");
				oSet.names[j] = name;
				oSet.dishMegs[j] = dishMeg;
				oSet.times[j] = time;
				oSet.addresses[j] = address;
				oSet.sumPrice[j] = sumPrice;
				break;
			}
		}
		if (!isAdd) {
			System.out.println("对不起,您的餐袋已满");
			return false;
		}
		return true;
	}
	public void sign() {
		boolean isSignFind = false;
		System.out.println("请选择要签收的订单号:");
		int signOrderId = input.nextInt();
		for (int i = 0; i < oSet.names.length; i++) {
			if (oSet.names != null && oSet.states[i] == 0
					&& i == signOrderId - 1) {
				oSet.states[i] = 1;
				System.out.println("订单签收成功");
				isSignFind = true;
			} else if (oSet.names != null && oSet.states[i] == 1
					&& i == signOrderId - 1) {
				System.out.println("您选择的订单已签收,不能再次签收!");
				isSignFind = true;
			}
		}
		if (!isSignFind) {
			System.out.println("您选择的订单不存在!");
		}
	}
	public void delete() {
		boolean isDelFind = false;
		System.out.println("请输入要删除的订单序号:");
		int delId = input.nextInt();
		for (int i = 0; i < oSet.names.length; i++) {
			if (oSet.states[i] == 1 && delId == i + 1 && oSet.names[i] != null) {
				isDelFind = true;
				for (int j = 0; j < oSet.names.length; j++) {
					oSet.names[j] = oSet.names[j + 1];
					oSet.dishMegs[j] = oSet.dishMegs[j + 1];
					oSet.times[j] = oSet.times[j + 1];
					oSet.addresses[j] = oSet.addresses[j + 1];
					oSet.states[j] = oSet.states[j + 1];
					oSet.sumPrice[j] = oSet.sumPrice[j + 1];
				}
				int endIndex = oSet.names.length - 1;
				oSet.names[endIndex] = null;
				oSet.dishMegs[endIndex] = null;
				oSet.times[endIndex] = 0;
				oSet.addresses[endIndex] = null;
				oSet.states[endIndex] = 0;
				oSet.sumPrice[endIndex] = 0;
				System.out.println("删除订单成功");
				break;
			} else if (oSet.states[i] == 0 && delId == i + 1
					&& oSet.names != null) {
				System.out.println("您选择的订单未签收,不能删除!");
				isDelFind = true;
				break;
			}
		}
		if (!isDelFind) {
			System.out.println("您要删除的订单不存在!");
		}
	}
	public void praise() {
		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 priaiseNum = (praiseNums[i] > 0 ? praiseNums[i] + "赞" : " ");
			System.out
					.println((i + 1) + "\t" + dishNames[i] + "\t" + prices[i]);
		}
		System.out.println("请选择您要点赞的菜品编号:");
		int priaiseNum = input.nextInt();
		praiseNums[priaiseNum - 1]++;
		System.out.println("点赞成功!");
	}
}

public class OrderingMgr {
	   public static void main(String[] args) {
	        OrderingUtil OU = new OrderingUtil();
	        OU.startMenu();
	        OU.initial();
	        OU.add();
	        OU.sign();
	        OU.delete();
	        OU.praise();
	        OU.display();
	    }

}