模块以及如何在以下情况下使用它答案

【问题标题】：Module and how to use it in the situation below模块以及如何在以下情况下使用它
【发布时间】：2017-07-09 06:20:16
【问题描述】：

public class AirplaneLab
{
private int [][] first;
private int [][] economy;
private boolean [] seat;
private boolean okay;
private boolean okayokay;
public AirplaneLab()
{
}
public AirplaneLab(int [][] first1, int [][] economy1)
{
}
public boolean viewFirstClass(boolean set[], int [][] first, int [][] economy)
{
    if (okay = true)
    {
        boolean seating1[] = new boolean[20];
        for (int  i = 0; i < 5; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                if(seat[((j + 1) + (i * 4)) - 1])
                {
                    System.out.print("x ");
                    seating1[i * j] = true;
                }
                else
                {
                    System.out.print("o ");
                    seating1[i * j] = flase;
                }
            }
            System.out.println();
        }
        System.out.println("The x's are the sets that are taken, o's are not");
        return seating1[];
    }
    else
    {
        return false;
    }
}
public boolean viewEconomyClass(boolean set[], int [][] first, int [][] economy)
{
    if (okayokay = true)
    {
        boolean seating2[] = new boolean[30];
        for (int  i = 0; i < 10; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                if(seat[((j + 1) + (i * 3)) - 1])
                {
                    System.out.print("x ");
                    seating2[i * j] = true;
                }
                else
                {
                    System.out.print("o ");
                    seating2[i * j] = false;
                }
            }
            System.out.println();
        }
        System.out.println("The x's are the sets that are taken, o's are not");
        return seating2[];
    }
    else
    {
        return false;
    }
}
public void decision()
{
    java.util.Scanner input = new java.util.Scanner(System.in);
    System.out.println("Please choose an option:");
    System.out.println("1 for “booking in first class”");
    System.out.println("2 for “booing in economy class”");
    System.out.println("3 to view seating chart for first class ");
    System.out.println("4 to view seating chart for economy class");
    System.out.println("0 to exit");
    System.out.print("? ");
    while(true)
    {                                                                                       
        int mOpt = input.nextInt();                         
        if ((mOpt == 1) || (mOpt == 3))
        {
            if (mOpt == 1)
            {
                okay = true;
                System.out.println("Based on the following setting arrangement, please pick a window middle or end seat");
                viewFirstClass(boolean set[], int [][] first, int [][] economy);
                for (int  i = 0; i < 5; i++)
                {
                    for (int j = 0; j < 4; j++)
                    {
                        if (seating1[i * j] == true)
                        {
                        if ((i * j) ________________)
                        }
                    }
                }
            }
        }
    }
}
}

在上面的代码中，空白是：所有右括号之前的最后一个 if 语句：我想知道你将如何在那里使用模块。假设我想做(i * j) 4的模块；我该怎么做？你能填空吗？感谢您的帮助！

【问题讨论】：

你的意思是模吗？
(i * j) % 4 ...百分号是Java中的取模运算符。
@Tim Biegeleisen，是的，谢谢你
你可以在下面输入你的答案，这样我就可以给你功劳了

标签： java arrays list arraylist multidimensional-array

【解决方案1】：

如果您正在寻找诸如

之类的东西（模）

  if ((i * j) mod 4 )

在java中，语法是

if ((i * j) % 4 )

【讨论】：