JAVA表示点的坐标并且用math.sqrt或math.hypot来计算两点间的距离

表示点的坐标并且用math.hypot来表示两点间的距离import sheffield.*;public class w {public static void main(String[] args) {EasyReader keyboard = new EasyReader();double a = keyboard.readDouble("Please type first: ");doub

the only KIrsTEN

978人浏览 · 2021-01-08 19:29:39

the only KIrsTEN · 2021-01-08 19:29:39 发布

JAVA表示点的坐标并且用math.sqrt或math.hypot来计算两点间的距离

1.math.sqrt
import sheffield.*;
public class w {
public static void main(String[] args) {

    EasyReader keyboard = new EasyReader();
   
    double a = keyboard.readDouble("Please type first: ");
  
    double b = keyboard.readDouble("Please type second: ");
   
    double c = keyboard.readDouble("Please type third: ");
  
    double d = keyboard.readDouble("Please type fourth: ");

    System.out.println("pointA（" + a + "，" + b + ")");
    System.out.println("pointB（" + c + "，" + d + ")");
    double sum;
    sum = Math.sqrt((a - c) * (a - c) + (b - d) * (b - d));
    System.out.println(sum);
}

}
2.math.hypot
Math.hypot() 函数返回它的所有参数的平方和的平方根
import sheffield.*;

public class w {
public static void main(String[] args) {

    EasyReader keyboard = new EasyReader();
    double a = keyboard.readDouble("Please type first: ");
    double b = keyboard.readDouble("Please type second: ");
    double c = keyboard.readDouble("Please type third: ");
    double d = keyboard.readDouble("Please type fourth: ");

    System.out.println("pointA（" + a + "，" + b + ")");
    System.out.println("pointB（" + c + "，" + d + ")");
    double sum;

    sum = Math.hypot(a - c, b - d);
    System.out.println(sum);

}

}