设计一个能够计算三个double：最大值、最小值、平均数的Java类

Question

求高人解答，三个数已知，我已经编了一部分，怎样才能补完？
public class Work1
{
public static void main(String[] args) {
System.out.println("最大值为"+max(3.56,2.48,5.79));
System.out.println("最小值为"+min(3.56,2.48,5.79));
}
public static double max(double num1,double num2,double num3)
{
if (num1>num2&num1>num3)
return num1;
else if (num2>num1&num2>num3)
return num2;
else
return num3;
}
public static double min(double num1,double num2,double num3)
{
if (num1<num2&num1<num3)
return num1;
else if (num2<num1&num2<num3)
return num2;
else
return num3;
}
}

Answer 1

毕业N年了，多快忘记光了，基本是自己的，要运行的话，可能语法上还得修改下的

public class Work1
{
public static void main(String[] args) {
double da=0,xiao=0,ping=0;
mac(3.56,2.48,5.79)
System.out.println("最大值为:"+da+"最小值:"+xiao+"平均值:"+ping)
}
public static double max(double a,double b,double c)
{
if (a>b){da=a,xiao=b;}else{da=b,xiao=a;}
if(c>da)da=c;
ping=(a+b+c)/3
}