蓝桥杯算法提高VIP-Quadratic Equation-题解（Java代码）

import java.util.Scanner;

public class Main {

public static void main(String[] args){

Scanner input = new Scanner(System.in);

double a=input.nextDouble();

double b=input.nextDouble();

double c=input.nextDouble();

double x1= (-b + Math.sqrt(b * b - 4 * a * c)) / (2 * a);

double x2= (-b - Math.sqrt(b * b - 4 * a * c)) / (2 * a);

if(x1>x2)

System.out.printf("%.2f %.2f",x1,x2);

else if(x1<x2)

System.out.printf("%.2f %.2f",x2,x1);

else

System.out.printf("%.2f",x1);

}

}