题解 | #求解立方根#

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        double inputValue=in.nextDouble();
        double assumeTargetValue=inputValue/3;
        double targetValue;
        while(true){
            targetValue=(2*assumeTargetValue+inputValue/(assumeTargetValue*assumeTargetValue))/3;
            if(Math.abs(targetValue-assumeTargetValue)<1e-6){
                System.out.printf("%.1f",targetValue);
                break;
            }
            assumeTargetValue=targetValue;
        }
        in.close();
    }
}