Please help, not verifying..

Question about the task

Under discussion

This task is really confusing. The example output does not match the output they say you must have using the alert methods.. Anyway, my code does not verify when I match their output, or when I correctly us the alert methods. Has anyone had the same issue?

Read a URL from the console.
Display a space-delimited list of all the parameters (The parameters follow the "?" and are separated by "&", e.g. "lvl=15").
The URL contains at least 1 parameter.
The parameters must be displayed in the same order in which they are present in the URL.
If the obj parameter is present, pass its value to the relevant alert method.
alert(double value) - for numbers (fractional numbers have a decimal point)
alert(String value) - for strings
Note that the alert method must be called AFTER the list of all parameters is displayed.

Example 1

Input:
http://codegym.cc/alpha/index.html?lvl=15&view&name=Amigo

Output:
lvl view name

Example 2

Input:
http://codegym.cc/alpha/index.html?obj=3.14&name=Amigo

Output:
obj name double: 3.14

Requirements:

The program should read only one line from the keyboard.
The Solution class must not have static fields.
The program must display data on the screen in accordance with the task conditions.
The program should call the alert method with the double parameter if the obj parameter can be correctly converted to a double.
The program should call the alert method with the String parameter if the obj parameter CANNOT be correctly converted to a double.

package com.codegym.task.task15.task1527; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Arrays; /* Request parser */ public class Solution { public static void main(String[] args) throws IOException{ //write your code here BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String input = reader.readLine(); String[] myStrArray = input.split("[?]")[1].split("&"); ArrayList<String> list = new ArrayList<>(); for(String s : myStrArray) { if(s.contains("=")) { String[] temp = s.split("="); for(int i = 0; i < temp.length; i++) { list.add(temp[i].trim()); } } else { list.add(s.trim()); } } for(String s : list) { try { double d = Double.parseDouble(s); alert(d); } catch (NumberFormatException e) { alert(s); } } } public static void alert(double value) { System.out.println("double: " + value); } public static void alert(String value) { System.out.println("String: " + value); } }

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Gendos

Level 24 , Yekaterinburg, Russia

21 September 2019, 21:30

You program logic does not work correctly. Input http://codegym.cc/alpha/index.html?lvl=15&view&name=Amigo Output String: lvl double: 15.0 String: view String: name String: Amigo You need to display value of the parameter ONLY for 'obj' parameter in the URL

Brandon Horvatic

Level 27 , Johannesburg, South Africa

21 September 2019, 21:41

Thanks for your response Alex. I tried this code as well and it fails the last 3 task conditions..

public class Solution {
    public static void main(String[] args) throws IOException{
        //write your code here
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String input = reader.readLine();
        String[] myStrArray = input.split("[?]")[1].split("&");
        ArrayList<String> list = new ArrayList<>();

        for(String s : myStrArray) {
            if(s.contains("=")) {
                String[] temp = s.split("=");
                list.add(temp[0]);
                System.out.print(temp[0] + " ");
                list.add(temp[1]);
            } else {
                System.out.println(list.add(s));
            }
        }

        System.out.println();

        for(String s : list) {
            if (s.contains(".")) {
                double d = Double.parseDouble(s);
                alert(d);
            }
        }
    }

    public static void alert(double value) {
        System.out.println("double: " + value);
    }

    public static void alert(String value) {
        System.out.println("String: " + value);
    }
}

Brandon Horvatic

Level 27 , Johannesburg, South Africa

21 September 2019, 21:42

when the input is http://codegym.cc/alpha/index.html?obj=3.14&name=Amigo the output is: obj name double: 3.14

Gendos

Level 24 , Yekaterinburg, Russia

21 September 2019, 21:58

Line 16:

System.out.print(list.add(s) + " ");

Instead of foreach loop on 22 line, use this

for (int s = 0; s < list.size(); s++) {
            if(list.get(s).equals("obj")){
                try {
                    alert(Double.parseDouble(list.get(s+1)));
                }catch (Exception e){
                    alert(list.get(s+1));
                }
            }
        }

Brandon Horvatic

Level 27 , Johannesburg, South Africa

22 September 2019, 13:44

Thanks Alex, I didn't quite understand the part about the obj but I see why you suggested to add that. However, the 5th condition passes now, but the third doesn't.. And there is no suggestion from the mentor, but the output is the same. This has definitely been the most frustrating task so far..

BlueJavaBanana

Level 37

9 May 2020, 13:27

This helped my code pass too. My logic presents the exact same output, but for some reason it wanted a try catch not an if statement. Thanks for the tip!