如何在java重载中获取结果值

Question

我想编写一个程序，如果输入为true，则添加a 和b，如果输入为false，则从a 中减去b。另外，当为ArrayList时，如果输入为true，则取最大值，如果输入为false，则取最小值。

public class Source7_3 {

    public static void main(String[] args) {
        OverLoading mm = new OverLoading();

        int[] a = new int[10];
        for (int i = 0; i < a.length; i++)
            a[i] = (int) (Math.random() * 100) + 1;

        System.out.println("dist(" + mm.a + ", " + mm.b + ", " + true + ") = ");
        System.out.println("dist(" + mm.a + ", " + mm.b + ", " + false + ") = ");
        System.out.println("dist(arr, " + true + ") = ");
        System.out.println("dist(arr, " + false + ") = ");
    }
}

class OverLoading {

    int a = (int) (Math.random() * 100) + 1;
    int b = (int) (Math.random() * 100) + 1;

    int dist(int a, int b, boolean d) {
        return d == true ? a + b : a - b;
    }

    int dist(int[] a, boolean d) {
        for (int j = 0; j < a.length; j++) {
            int max, min;
            max = min = a[0];
            if (max < a[j])
                max = a[j];
            if (min > a[j])
                min = a[j];
            return true ? max : min;
        }
    }

}

但我无法得到结果值.. 我怎么才能得到它？ 感谢您的帮助！

Answer 1

我认为您正在尝试调用这些方法，但目前您只是附加 Strings

System.out.println("dist(" + mm.a + ", " + mm.b + ", " + true + ") = ");

应该是

System.out.println(mm.dist(mm.a, mm.b, true);

和因为字段 a 和 b 是类的一部分，所以没有必要传递它们

Answer 2

class OverLoading
{
    int a = (int) (Math.random() * 100) + 1;
int b = (int) (Math.random() * 100) + 1;

int dist(int a, int b, boolean d) {
    return d == true ? a + b : a - b;
}

int dist(int[] a, boolean d) {
        int max, min;
        max = min = a[0];
    for (int j = 0; j < a.length; j++) {
        if (max < a[j])
            max = a[j];
        if (min > a[j])
            min = a[j];
    }
    return  d == true ? max : min;
}
}

public class HelloWorld{

    public static void main(String[] args) {
    OverLoading mm = new OverLoading();

    int[] a = new int[10];
    System.out.println("\n");
    for (int i = 0; i < a.length; i++)
    {
        a[i] = (int) (Math.random() * 100) + 1;
        System.out.println(a[i]);
    }
    System.out.println("\n");
    System.out.println("dist(" + mm.a + ", " + mm.b + ", " + true + ") = "+mm.dist(mm.a,mm.b,true));
    System.out.println("dist(" + mm.a + ", " + mm.b + ", " + false + ") = "+mm.dist(mm.a,mm.b,false));
    System.out.println("dist(arr, " + true + ") = "+mm.dist(a,true));
    System.out.println("dist(arr, " + false + ") = "+mm.dist(a,false));
}
}