我正在自学Java，我正在通过Deitel的书来编写示例程序。
以下是练习：
一家小型航空公司刚为其新的自动预订系统购买了一台计算机。您被要求开发新系统。您将编写一份申请，在航空公司唯一的飞机的每个航班上分配座位（容量：10个座位）。
您的应用程序将显示以下备选方案：“请为First Class键入1”和“请为经济键入2”。如果用户键入1，您的应用程序将在第一类中指定一个席位（席位1-5） ）。如果用户键入2，您的应用程序将在经济部分（座位6-10）分配一个席位。然后，您的申请将显示一个登机牌，表明该人的座位号以及是否在飞机的头等舱或经济舱内。
使用原始类型布尔的1维数组来表示平面的座位图。将数组的所有元素初始化为false以指示所有席位都为空。在分配每个座位时，将数组的相应元素设置为true以指示座位不再可用。
您的申请将永远不会分配已分配的席位。当经济部分已满时，您的申请将询问该人是否可以被置于第一类部分（反之亦然）。如果是，请进行适当的座位分配。如果不是，则显示消息“下一班航班将在3小时内离开。”
我无法让程序完全遍历所有参数。
这是我的代码：
import java.util. Arrays;
import java.util.Scanner;
public class Exercise_619 {
public static void main(String[] args){
boolean [] seating = new boolean [11]; // Creates a one deminsional array
Scanner input = new Scanner(System.in);
System.out.println("Please type 1 for First Class or 2 for Economy: "); // Asks the user to give input
int section = input.nextInt(); // Store user's input
if (section == 1) // If the user inputs 1 for First class, then First Class object is called
{
firstClassSeat();
}
else // If the user inputs 2 for Economy, then Economy object is called
{
economySeat();
}
}
public static void firstClassSeat(){
boolean [] seating = new boolean [11]; // Creates a new array
Scanner input = new Scanner(System.in);
for (int count = 1; count <= 5; count++){ // Starts the loop for First Class object
if (seating[count] == false)
{
seating[count] = true; // Assigns passenger a seat in first class
System.out.printf("First Class. Seat number: %d\n", count);
break;
}
else if (seating[5] == true)
{
if (seating[10] == true) // If the psasenger does not decide to down grade to Economy, then the program prompts the passenger when the next flight is
{
System.out.println("Sorry, the flight is fully booked. Next flight leaves in 3 hours.");
}
else // if the passenger chooses to be down graded to Economy, then the program assigns the passenger a seat in Economy
{
System.out.println("First class is fully booked. Would you like a seat in Economy? Type 1 for yes or 2 for No: ");
int choice = input.nextInt();
if (choice == 1)
{
economySeat();
}
else // If flight is full, then the program tells the passenger when the next flight is
{
System.out.println("Next flight is in 3 hours.");
}
}
}
}
}
public static void economySeat(){
boolean [] seating = new boolean [11]; // Creates a new array
Scanner input = new Scanner(System.in);
for (int count = 6; count <= 10; count++) // Starts the loop for Economy object
if (seating[count] == false)
{
seating[count] = true; // Assigns passenger a seat in Economy
System.out.printf("Economy. Seat number: %d\n", count);
break;
}
else if (seating[10] == true)
{
if (seating[5] == true) // If the paasenger does not decide to up grade to First Class, then the program prompts the passenger when the next flight is
{
System.out.println("Sorry, flight is fully booked. Next flight is in 3 hours.");
}
else // if the passenger chooses to be up graded to First Class, then the program assigns the passenger a seat in First Class
{
System.out.println("Economy is fully booked. Would you like a seat in First Class? Type 1 for Yes or 2 for No: ");
int choice = input.nextInt();
if (choice == 1)
{
firstClassSeat();
}
else
{
System.out.println("Next flight is in 3 hours."); // If flight is full, then the program tells the passenger when the next flight is
}
}
}
}
}
有人有任何建议或者至少向我发出正确的方向吗？
感谢。
答案 0 :(得分：-1)
我知道你刚开始的感觉，所以我可以帮助你一点。您应该尝试记下下次要做的事情，这将真正帮助您思考问题。你在整个地方宣布11个座位，看起来真的很困惑。我写这段代码非常快，应该让你朝着正确的方向前进。祝你好运。
import java.util.Scanner;
public class Server {
boolean[] firstClass = new boolean[5];
boolean[] economyClass = new boolean[5];
int numFirstClass = 0;
int numEconomyClass = 0;
Scanner scan = new Scanner(System.in);
public void book(){
System.out.println("Press 1 for economy and 2 for first class.");
int choice = scan.nextInt();
if (choice == 1)
economyClass();
else if (choice == 2)
firstClass();
else
System.out.println("Invalid selection");
}
private void firstClass(){
if (numFirstClass < 5){
for (int i = 0; i < firstClass.length; i++){
if(!firstClass[i]){
firstClass[i] = true;
System.out.println("First Class. Seat number: "+(i+1));
numFirstClass++;
break;
}
}
}
else if (numEconomyClass < 5){
System.out.println("No more 1st class. Press 1 if you would like to book an economy class ticket.");
int choice = scan.nextInt();
if (choice == 1)
economyClass();
else
System.out.println("The next flight leaves in 3 hours.");
}
else
System.out.println("All booked, the next flight leaves in 3 hours.");
}
private void economyClass(){
if (numEconomyClass < 5){
for (int i = 0; i < economyClass.length; i++){
if(!economyClass[i]){
economyClass[i] = true;
System.out.println("Economy Class. Seat number: "+(i+6));
numEconomyClass++;
break;
}
}
}
else if (numFirstClass < 5){
System.out.println("No more economy. Press 1 if you would like to book an first class ticket.");
int choice = scan.nextInt();
if (choice == 1)
firstClass();
else
System.out.println("The next flight leaves in 3 hours.");
}
else
System.out.println("All booked, the next flight leaves in 3 hours.");
}
}
驱动程序类
import java.util.Scanner;
public class Client {
static boolean running = true;
public static void main(String[] args) {
Server tickets = new Server();
Scanner scan = new Scanner(System.in);
while(running){
tickets.book();
System.out.println("Type 'Quit' to quit, else any key to continue.");
String quit = scan.next();
if (quit.equalsIgnoreCase("Quit"))
running = false;
}
}
}