java - 座位预订二维数组

Question

我正在做一个简单的座位预订，它使用维度数组。程序应要求用户输入座位号，并将保留替换为 0，并且不允许用户保留先前保留的座位，并应显示“座位已占用”。我有二维数组表(感谢其他 stackoverflow 成员帮助我解决这个问题)，现在我不知道如何将座位号更改为 0。你们能给我一些如何解决这个问题的想法吗？谢谢!

这是我的代码:

package newtable;

import java.io.*;

public class Newtable {

    public static void printRow(int[] row) {
        for (int i : row) {
            System.out.print(i);
            System.out.print("\t");
        }
        System.out.println();
    }

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int twoDm[][] = new int[5][7];
        int i, j, k = 1;
        int ans;

        for (i = 0; i < 5; i++) {
            for (j = 0; j < 7; j++) {
                twoDm[i][j] = k;
                k++;
            }
        }

        for (int[] row : twoDm) {
            printRow(row);
        }
        System.out.print("Enter a Seat number to reserve: ");
        ans = Integer.parseInt(br.readLine());

    }
}

Answer 1

我想这就是你想要的:

    package newtable;
    import java.io.*;
    public class Newtable {

    public static void printRow(int[] row) {
         for (int i : row) {
            System.out.print(i);
            System.out.print("\t");
        }
        System.out.println();
    }

     public static void main(String[] args)throws Exception {
     BufferedReader br=new BufferedReader(new InputStreamReader(System.in));   
     int twoDm[][]= new int[5][7];
        int i,j,k=1;
        int ans;

        for(i=0;i<5;i++) {
            for(j=0;j<7;j++) {
                twoDm[i][j]=k;
                k++;
            }
        }

        for(int[] row : twoDm) {
            printRow(row);
        }

        //this loop repeats the reserving process (and printing seats) 5 times
        for (int l = 0; l < 5; l++) {
            System.out.print("Enter a Seat number to reserve: ");
            ans = Integer.parseInt(br.readLine());
            k = 1;
            for(i=0;i<5;i++) {
                for(j=0;j<7;j++) {
                    if (k == ans) {
                        //here we check if the seat has already been reserved
                        if (twoDm[i][j]== 0) {
                            System.out.println("That seat has already been reserved");
                        }
                        //if its not reserved then reserve it
                        else {
                             twoDm[i][j]= 0;
                        }
                    }
                    k++;
                }
            }
            //print updated array of seats
            for(int[] row : twoDm) {
                printRow(row);
            }
       }

  }

此代码搜索刚刚从控制台输入的座位号并将其设置为 0；

    k = 1;
    for(i=0;i<5;i++) {
       for(j=0;j<7;j++) {
           if (k == ans) {
              twoDm[i][j]= 0;
           }
           k++;
       }
    }