算法1
Java 代码
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
double x = sc.nextDouble();
double l = -100;
double r = 100;
while(r - l > 1e-8){
double mid = (l + r) / 2;
if(mid * mid * mid >= x) r = mid;
else l = mid;
}
System.out.printf("%.6f\n", l);
}
}