英文:
How can I find the distance between two points using only two variables and after that store all points and obtain the shape?
问题
package com.company;
import java.lang.Math;
public class Point {
//fields
private int x;
private int y;
//constructor
public Point(int x, int y) {
this.x = x;
this.y = y;
}
//method
//getters
public int getX() {
return x;
}
public int getY() {
return y;
}
//setters
public void setX(int x) {
this.x = x;
}
public void setY(int y) {
this.y = y;
}
public int getPoint(){
}
//function distance
public void distance() {
//**here I need somehow use only two variables instead of four**
double res = Math.sqrt((Math.pow(getX1(), 2) - Math.pow(getX2(), 2))
+ (Math.pow(getY1(), 2) - Math.pow(getY2(), 2)));
System.out.println(res);
}
}
注意：代码中的 getX1、getX2、getY1 和 getY2 需要进行适当修改，以便使用正确的属性和方法。
英文:
I tried to declare two variable x and y, then create constructor for them and getters with setters. So, for this I used class Distance, while for the obtaining shape I need another class.
package com.company;
import java.lang.Math;
public class Point {
//fields
private int x;
private int y;
//constructor
public Point(int x, int y) {
this.x = x;
this.y = y;
}
//method
//getters
public int getX() {
return x;
}
public int getY() {
return y;
}
//setters
public void setX(int x) {
this.x = x;
}
public void setY(int y) {
this.y = y;
}
public int getPoint(){
}
//function distance
public void distance() {
//**here I need somehow use only two variables instead of four**
double res = Math.sqrt((Math.pow(getX1(), 2) - Math.pow(getX2(), 2))
+ (Math.pow(getY1(), 2) - Math.pow(getY2(), 2)));
System.out.println(res);
}
}
答案1
得分: 3
创建一个函数，接受类型为Point的对象。该函数返回原始点与传递点之间的距离。
public void distance(Point po) {
// **在这里，我需要想办法只使用两个变量，而不是四个**
double res = Math.sqrt(
Math.pow(getX() - po.getX(), 2) +
Math.pow(getY() - po.getY(), 2)
);
System.out.println(res);
}
同时，你计算距离的函数是错误的。
英文:
Create a function that accepts object of type Point. The function returns the distance between the original point and passed point
public void distance(Point po) {
//**here I need somehow use only two variables instead of four**
double res = Math.sqrt(
Math.pow(getX() - po.getX(), 2) +
Math.pow(getY() - po.getY(), 2)
);
System.out.println(res);
}
Also your function to calculate distance was wrong.
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