Que06|790. 数的三次方根

题目：790. 数的三次方根 - AcWing题库

代码实现：

import java.util.*;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        double l = -10000, r = 10000;
        while (r - l >= 1e-8) {
            double mid = (l + r) / 2;
            if (mid * mid * mid >= n) {
                r = mid;
            } else {
                l = mid;
            }
        }
        System.out.printf("%.6f", l);
    }
}