有一道数学题目求解
设计一个表示三角形的类sjx（成员包含三条边），在主程序中创建对象t，按如下格式输出三角形的周长和面积T(3，4，5),Area=6
T(3,4,5),Perimeter --------------------编程问答--------------------
public class Triangle {
private double a;
private double b;
private double c;
public Triangle(double a, double b, double c) {
this.a = a;
this.b = b;
this.c = c;
}
/**
* 计算三角形的周长
*
* @return
*/
public double getLength() {
return (a + b + c);
}
/**
* 计算三角形的面积
*
* @return
*/
public double getSpace() {
double temp = getLength() / 2;
return java.lang.Math.sqrt(temp * (temp - a) * (temp - b) * (temp - c));
}
public static void main(String[] args) {
Triangle t = new Triangle(3, 4, 5);
System.out.println("周长: " + t.getLength());
System.out.println("面积: " + t.getSpace());
}
}
--------------------编程问答--------------------
import java.lang.Math.*;public class Sanjiao{
private double a;
private double b;
private double c;
public Sanjiao(double a,double b,double c){
this.a = a;
this.b = b;
this.c = c;
}
public double Sanjiaolength(){
return a+b+c;
}
public double Sanjiaospace(){
double temp = Sanjiaolength()/2;
return Math.sqrt(temp * (temp - a) * (temp - b) * (temp - c));
}
public static void main(String[] args){
Sanjiao sanjiao = new Sanjiao(3,4,5);
System.out.println("三角形的周长是："+sanjiao.Sanjiaolength());
System.out.println("三角形的面积是："+sanjiao.Sanjiaospace());
}
}
--------------------编程问答-------------------- 除 --------------------编程问答-------------------- 可以利用海伦公式
补充：Java , J2ME
