Java面對物件 -- 最佳擬合直線
阿新 • • 發佈：2018-12-20
最佳擬合直線 問題：輸出有問題，演算法目前無問題 package kl; import java.util.Scanner; class Sum{//此類無用，在迴圈中無法輸入資料 int x,y; double a,b;//輸入資料需改進 double f(double s1,double s2,double s3,double s4,int n) {
return a;
}
double f1(double s1,double s2,double s3,double s4,int n) {
return b;
}
}
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner( System.in);
int n = in.nextInt();
double a,b,s1 = 0,s2 = 0,s3 = 0,s4 = 0;
for(int i = 0; i < n;i++) {
double x = in.nextDouble();
double y = in.nextDouble();
s1 = s1 + xy;
s2 = s2 + x;
s3 = s3 + y;
s4 = s4 + xx;
}
a = (n s1 - s2s3)/(ns4 - s2s2);
b = (s3s4 - s2 s1)/(ns4 - s2s2);
System.out.printf("%.3lf%n",a);//輸出有問題，在printf 上
System.out.printf("%.3lf\n",b);
}
}