题解 | #求解立方根#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        double d = in.nextDouble();
        // X^3 : -20-20 x:-3-3
        //left -3 right 3
        System.out.printf("%.1f",find(d,-3,3));
    }

    static double find(double d,double left, double right){
        double mid = (left+right)/2;
        double v = mid * mid * mid;
        if (Math.abs(v-d)<0.001) return mid;
        else if (v>d) return find(d, left, mid);
        else return find(d,mid,right);
    }
    
}