Java 毕达哥拉斯定理的代码优化
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/23499924/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Code optimization for pythagoras theorem
提问by unexim
could anyone help me with the following code :
任何人都可以帮助我使用以下代码：
import java.math.*;
import java.util.Scanner;
public class Pitagor {
public static void main (String[] args){
System.out.println(pitagor(in1(),in2()));
}
public static int in1 (){
Scanner input = new Scanner(System.in);
System.out.println("Eingabe von a ");
int a = input.nextInt();
return a;
}
public static int in2 (){
Scanner input = new Scanner(System.in);
System.out.println("Eingabe von b");
int b = input.nextInt();
return b;
}
public static double pitagor (int x , int y){
double c = Math.sqrt((x*x)+(y*y));
return c;
}
}
My goal here is to make the code simpler by using separate methods for input and calculation, but i can't seem to understand how to make only one input method instead of in1()and in2().
我的目标是通过使用单独的输入和计算方法使代码更简单，但我似乎无法理解如何只使用一种输入方法而不是in1()和in2()。
What i tried was :
我试过的是：
public static void in (){
Scanner input = new Scanner(System.in);
System.out.println("Eingabe von a ");
int a = input.nextInt();
Scanner input = new Scanner(System.in);
System.out.println("Eingabe von b");
int b = input.nextInt(); }
but i don't know how to get aand bfrom this method, so i can use them in
但我不知道如何从这个方法中得到a和b，所以我可以在
pitagor (int x , int y)
pitagor (int x , int y)
Thanks in advance.
提前致谢。
采纳答案by Mike B
One way to do it:
一种方法：
import java.math.*;
import java.util.Scanner;
public class Pitagor {
public static void main (String[] args){
System.out.println(pitagor(getIntInput("Eingabe von a "),getIntInput("Eingabe von b")));
}
public static int getIntInput(String prompt){
Scanner input = new Scanner(System.in);
System.out.println(prompt);
return input.nextInt();
}
public static double pitagor (int x , int y){
double c = Math.sqrt((x*x)+(y*y));
return c;
}
}
