,这个点在这个爱心里面的概率是多少,精确到0.1(小数点后保留一位小数,比如0.1, 0.2等)
import java.util.*; public class main { public static double genGaussValue(double mu, double sigma) { double random = new Random().nextGaussian(); return random * sigma + mu; } public static boolean isInside(double x, double y) { double xx = x * x; double yy = y * y; double tmp = xx + yy - 1; return (tmp * tmp - xx * yy) < 0 ? true : false; } public static double learnCurve(double mu1, double sigma1, double mu2, double sigma2) { int N = 10000; int count = 0; for (int i = 0; i < N; i++) { double v1 = genGaussValue(mu1, sigma1); double v2 = genGaussValue(mu2, sigma2); if (isInside(v1, v2)) { count++; } } return count * 1.0 / N; } public static void main(String[] args) { Scanner sc = new Scanner(System.in); double mu1 = sc.nextDouble(); double sigma1 = sc.nextDouble(); double mu2 = sc.nextDouble(); double sigma2 = sc.nextDouble(); double res = learnCurve(mu1, sigma1, mu2, sigma2); System.out.printf("%.1f", res); } }