Java 剧院的二维座位排列

Question

import java.util.*;

/**
 * Write a description of class TheaterApp here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class TheaterApp {

    static int [][] seats = {  
            {10,10,10,10,10,10,10,10},
            {10,10,10,10,10,10,10,10},
            {10,10,20,20,20,20,10,10},
            {20,20,30,30,30,30,20,20},
            {30,30,40,40,40,40,30,30},
            {30,40,40,50,50,40,40,40}};

    /**
     * Constructor for objects of class TheaterApp
     */
    public static void main(String [] args)
    {
        Scanner input = new Scanner(System.in);
        String ans;

        do {
            System.out.print("Enter request, please (or 'help' or 'quit') ");
            ans = input.next();

            if (ans.equals("help")) {
                System.out.println("Possible commands");
                System.out.println("price <price>");
                System.out.println("seat <row> <seat>");
                System.out.println("left");
                System.out.println("remaining <price>");
                System.out.println("print");
                System.out.println("quit");
                System.out.println("help");

            } else if (ans.equals("price")) {
                int p = input.nextInt();

                for (int i = 0; i < seats.length; i++) {
                    for (int j = 0; j < seats[i].length; j++) {
                        if (seats[i][j] == 0) {
                            System.out.println("Next available seat at position: " + i + " " + j);
                        }
                    }
                }

                // Find the 'best' seat at the given price
            } else if (ans.equals("seat")) {
                int r = input.nextInt();
                int c = input.nextInt();
                int k;
                int i;
                int j;
                for (int l = 0; l < 6; l++) {

                    k = 1;
                    for(i=0;i<6;i++) {
                        for(j=0;j<8;j++) {
                            if (k == input.nextInt()) {
                                // check if the seat has already been reserved
                                if (seats[i][j]== 0) {
                                    System.out.println("That seat has already been reserved");
                                }
                                // if its not reserved then reserve it
                                else {
                                    seats[i][j]= 0;
                                }
                            }
                            k++;

                            System.out.println(seats[i][j]);
                        }
                    }
                }

                // Reserve the given row and seat, if possible
            } else if (ans.equals("left")) {


                // Print the total available seats


            } else if (ans.equals("remaining")) {
                int p = input.nextInt();


                // Print the total available seats at this price


            } else if (ans.equals("print")) {
                for (int r = 0; r < seats.length; ++r) {
                    for (int s = 0; s < seats[r].length; ++s) {
                        System.out.print(seats[r][s] + " ");
                    }
                    System.out.println();
                }
            } else if (!ans.equals("quit")) {
                System.out.println("Come again?");
            }
        } while (!ans.equals("quit"));
        System.out.println("Good bye");
    }
}

这个数组代表剧院座位，我必须通过将价格更改为 0 来标记已售出的座位。我还必须确保当用户要求某个特定位置时以及用户输入价格时座位是空着的，找到任何开放的座位。

所以我很确定我找到了以任何给定价格找到最佳座位的代码。我不知道如何完成剩余的代码。

我只需要了解如何打印可用座位总数以及输入特定价格时如何打印可用座位总数。

谢谢。

Answer 1

您只需像以前一样使用嵌套的 for 循环，除了现在您会有某种 availableSeats 计数器，每次当座位遇到某个特定位置时，您就会递增条件。

像这样：

    int availableSeats = 0;
    for(i=0;i<6;i++) {
        for(j=0;j<8;j++) {
            if(seats[i][j] == sometargetprice){
                availableSeats++;
            }
        }
    }
    System.out.println("Total of " + availableSeats + " are available.");

除非我没有正确理解问题。

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