数组

//数组元素求最值，反转
public class Array {
    public static void main(String[] args) {
        int[] array=new int[]{50,47,68,24,100};
        int max,min;
        max=min=array[0];
        for(int i=1;i<array.length;i++)
        {if(array[i]>max)
                max=array[i];
            if(array[i]<min)
                min=array[i];}
        System.out.println("最大值："+max);
        System.out.println("最小值："+min);
        int i=0;
        int right=array.length-1;
        for(;i<array.length/2;i++,right--)
        {int t=array[i];
        array[i]=array[right];
        array[right]=t;}
        for (i = 0; i < array.length; i++) {
            System.out.println(array[i]);
        }

    }
}
-----------------------------
最大值：100
最小值：24
100
24
68
47
50

Process finished with exit code 0

数组作为函数的返回值（地址传递）

public class Methodarray {
    public static void main(String[] args) {
        double[] a=cal(2.2,3.5,6.8);
        System.out.println(a[0]);
        System.out.println(a[1]);
        
    }
    public static double[] cal(double a,double b,double c){
        double[] array={a+b+c,(a+b+c)/3};
        return array;
    }
}
----------------------------------------------
12.5
4.166666666666667

Process finished with exit code 0

return语句只能返回一个，但使用数组，可返回数组地址，间接返回多个值