java - 计算星期误差

Question

我已经编写了这个程序，但输出不工作。你能帮我确定错误在哪里吗？ 我必须使用此代码而不是来自互联网的任何其他代码， 因为我们必须根据我们从类(class)中理解的内容来构建它。 我正在使用 jgrasp。

----jGRASP exec: javac -g samooras.java

我得到的错误是

samooras.java:25: error: incompatible types: int cannot be converted to String[]
                  -2*(year/100))%7+7)%7+1;
                                       ^
1 error

 ----jGRASP wedge2: exit code for process is 1.

代码:

import java.util.Scanner;

public class samooras {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String[] dayoftheweek = {"Sat", "Sun", "Mon", "Tues", "Wed", "Thur", "Fri"};
        int year = input.nextInt();
        int month = input.nextInt();
        int day = input.nextInt();
        dayoftheweek = ((day +
                         (13 * ((month + 9) % 12 + 1) - 1) / 5
                         + year % 100
                         + year % 100 / 4
                         + year / 400
                         - 2 * (year / 100)) % 7 + 7) % 7 + 1;
        System.out.println("the day of the week is: " + dayoftheweek);
    }
}

Answer 1

假设您正在使用该公式从您创建的数组中获取星期几，您将在其中执行以下操作:

import java.util.Scanner;

public class samooras {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String[] dayoftheweekArray = {"Sat", "Sun", "Mon", "Tues", "Wed", "Thur", "Fri"};
        int year = input.nextInt();
        int month = input.nextInt();
        int day = input.nextInt();
        int dayoftheweekNumber = ((day + 
                                   (13 * ((month + 9) % 12 + 1) - 1) / 5
                                   + year % 100
                                   + year % 100 / 4
                                   + year / 400
                                   - 2 * (year / 100)) % 7 + 7) % 7 + 1;
        String dayoftheweek = dayoftheweekArray[dayoftheweekNumber]; 
        System.out.println("the day of the week is: " + dayoftheweek);
    }
}