我不能从数组中返回值

Question

这是经过评估的作业，所以请不要直接回答。

我的程序应该计算用户的等级：“通过”，“失败”或“带补偿的通过”。但是，它不会返回答案。我不知道为什么--有人能帮上忙吗？

公共类标记{ static int[] MarkCalculator =新int12；

//public static Scanner keyboard = new Scanner(System.in);
public static void main(String[] args) {
    Scanner kb = new Scanner(System.in);
    int weighting;
    int coursework;
    int exammark;

    System.out.println("Please enter course work weighting");
    marks[0]= kb.nextInt();

    System.out.println("Please enter course work mark");
    marks[1]= kb.nextInt();

    System.out.println("Please enter exam mark");
    marks[2]= kb.nextInt();


    MarkCalculator mc = new MarkCalculator();
    mc.computeMarks(marks);

}




public String[] computeMarks(int[] marks) {

    final int[] WEIGHTING = {55,66,55,44,33,44};
    String[] results = new String[WEIGHTING.length];
    for (int i = 0; i < marks.length / 2; i++) {

        int exam = marks[i];
        int cw = marks[i];
        int weight = WEIGHTING[i];
        int formula = ((cw + weight) + (exam * (100 - weight)) / 100);

        if (formula >= 40){
            results[i]="PASS";
        } else if ((formula < 39) && (formula > 35)){
            results[i]="COMPENSATION PASS";
        }else{
            results[i]="FAIL";

        }

    }

    return results;
}

}

Answer 1

final int[] WEIGHTING = {};
String[] results = new String[WEIGHTING.length];

这里有一个问题。权重没有初始大小。

Answer 2

另外:你不需要用任何东西来初始化标记。试试这个：

System.out.println("Please enter course work weighting");
        marks[0]= kb.nextInt();

        System.out.println("Please enter course work mark");
        marks[1]= kb.nextInt();

        System.out.println("Please enter exam mark");
        marks[2]= kb.nextInt();

        MarkCalculator mc = new MarkCalculator();
        mc.computeMarks(marks);

Answer 3

问题是权重是空的

final int[] WEIGHTING = {}; // empty
String[] results = new String[WEIGHTING.length];
for (int i = 0; i < marks.length / 2; i++) {

    int exam = marks[i];
    int cw = marks[i];
    int weight = WEIGHTING[i]; // You cant access elements from an empty array

也是

    MarkCalculator mc = new MarkCalculator();
    mc.computeMarks(marks);

在这里，您传递的标记是空的。

编辑

你的程序不能工作的原因是因为你没有捕捉到computeMarks的结果。您应该将其存储在main内的数组中，如

String[] result = mc.computeMarks(marks);

for(int k=0;k<result.length;k++)
{
    System.out.println(result[k]);
}