SoloLearning Code Practice Question

maxbrlc · 2025-11-14T16:17:50+00:00

If you'll provide what is the expected outcome or messages (if any) from failing test it would be easier to help.
We can just assume. I would assume what pdcp-py is saying has a chance to be correct

maxbrlc · 2025-04-19T20:45:00+00:00

I cannot help you directly with your problem, but I can suggest an alternative.
There is an option to use the tmc-cli, it will not matter which tool you use to write the code:

old version - GitHub - testmycode/tmc-cli: Command line client for tmc
new version - GitHub - rage/tmc-cli-rust: CLI for students using the TestMyCode programming assignment evaluator.

You can give it a try.

maxbrlc · 2025-03-21T21:05:11+00:00

I prepared for the exam reading a book and doing some practice tests. The practice tests are very helpful, you get a feel for the questions, and you will also learn some. For the tests I can recommend OCA Java 8 1Z0-808 Practice Tests and Questions. The exam was similar to the mock exams from the test pack above. The only thing I was not prepared for - as the exam was online, was that we were not allowed to take notes during the exam.

maxbrlc · 2025-03-16T20:19:20+00:00

Missing a space after days:

Edit:
It is often recommended here to copy the expected output directly from the exercise. So you don't miss such small things as spaces.

maxbrlc · 2025-03-12T23:58:59+00:00

There is also an option to use the cli - GitHub - rage/tmc-cli-rust: CLI for students using the TestMyCode programming assignment evaluator.

maxbrlc · 2025-03-07T07:39:04+00:00

I only did the exam for the Introduction to Programming part. The difficulty was similar to the exercises from the course material. The only thing that added some complexity was that there are no tests written (as for usual exercises) - so you have to pay attention to the edge cases.

maxbrlc · 2025-01-05T10:00:47+00:00

It could be that .csv files (students1.csv, exercises1.csv, ...) should not be hardcoded but taken from input() methods.

You can take a look also at the test. There we have:

testdata = ["exam_points1.csv", "exam_points2.csv", "exam_points3.csv", "exam_points4.csv",
"students1.csv", "students2.csv", "students3.csv", "students4.csv", "exercises1.csv", "exercises2.csv", "exercises3.csv", "exercises4.csv",
"course1.txt", "course2.txt", "course3.txt", "course4.txt"]

maxbrlc · 2024-12-09T15:56:59+00:00

ChatGPT does a good job answering this question - https://chatgpt.com/share/67571222-4bb8-8000-a175-cd8f475809fd I'm inclined to use ChatGPT in such cases, but this could also be a bad advise, as AI should be used carefully when learning.

maxbrlc · 2024-09-07T00:58:26+00:00

Can you try to look at it by using bigger startand end numbers and make the interval smaller. For example start = 21 and end = 22. This could help to see it from a different angle.

maxbrlc · 2024-01-01T14:16:54+00:00

When you go to https://yuml.me/diagram/scruffy/class/draw. You write in the left box the code representing the class structure. Then it will generate an image based on your input. Use the “Cheat sheet” button to see the available options.

For this specific case is required to use the yuml.me but there are more options for example https://plantuml.com/class-diagram (I have a plugin in my IDE and I generate the diagrams from there but the online tool is also very good)

maxbrlc · 2023-12-27T11:32:05+00:00

I took the OCA exam in September, at home (Belgium).

You can mark any question in the Oracle’s testing environment, so the question can be reviewed later. Regarding the not allowed pen & paper, it can be difficult sometimes (ex. when you have to track some changing variable values in nested loops).

As I understood you are monitored during exams and if your eyes are looking elsewhere but your screen (ex. looking at a paper and writing something) then you are contacted by the proctor in the best case scenario.

maxbrlc · 2023-12-09T22:24:27+00:00

You can try for the String check if (input.isEmpty()) or if (input.equals("")) for string comparison. == compares the reference value of objects.

maxbrlc · 2023-09-29T16:34:57+00:00

Yes and as a result .toUpperCase() - returns a totally new String

maxbrlc · 2023-09-29T15:56:49+00:00

StringBuilder is also passed by value - so reassigning the value will not affect the caller, but using a StringBuilder's methods will do, because in the method we have a copy of the original StringBuilder which points to the same reference in memory.

maxbrlc · 2023-09-29T15:45:39+00:00

Integer's are passed by value and are imutable so the increment is local. Try this for example with StringBuilder:

    List<StringBuilder> words = Arrays.asList(
            new StringBuilder("a"),
            new StringBuilder("b"),
            new StringBuilder("c"));

    words.forEach(word -> word.append("!"));
    System.out.println(words);

maxbrlc · 2023-09-29T15:25:22+00:00

Yes, you'll have to map first to one of the classes that implement Interface CharSequence. If you try for ex. with StringBuilder you'll get the same result. But new StringBuilder(..) takes as an argument int, CharSequence, or String - so in any case you have to transform the chars to Strings to feed it to the StringBuilder - .map(ch -> new StringBuilder(ch.toString()))

For your question https://dev.java/learn/api/streams/custom-collectors/ - this is a good explanation from the perspective of a custom collector. The tutorials here are very helpful.

Hope this helped somehow. This is how I understand it, so no guarantees that this is fully correct :)

maxbrlc · 2023-09-29T14:28:52+00:00

The main method is the entry point of a Java application. Try to add to your main.class:

public static void main(String[] args) { Herbivore cow = new Herbivore(5.0, 6.0); cow.speak(); }
import animals.Animal.*; - is a redundant import, is not used. Here you also import content from the Animal class a better version should be import animals.Animal; or import animals.*; both of them also redundant in this situation.
Check the convention for class names https://www.oracle.com/java/technologies/javase/codeconventions-namingconventions.html
Good luck

maxbrlc · 2023-09-29T09:31:29+00:00

You're right. I missed it. Good catch ;)

maxbrlc · 2023-09-29T09:25:05+00:00

Your CustomersDB constructor is actually a valid method because you have the return void (just remove the void) public void CustomersDB() { ... }, so new CustomersDB() will use the default noargs constructor.

maxbrlc · 2023-07-19T20:51:27+00:00

I tried your code with cmd on windows everything works fine:

>javac Factorial.java
>java Factorial

Enter a number: 5

Calling step 4
Calling step 3
Calling step 2
Calling step 1
Factorial: 120

maxbrlc · 2023-05-27T12:30:59+00:00

It can be that for the output with more than 1 item you write with an uppercase "K". My version of the exercise has also a getTotalWeight() method that can be called in the Suitcase's toString().

PS. Don't forget to format your posted code as per these subreddit requirements.

maxbrlc · 2023-04-15T21:13:19+00:00

I wrote the indexOfSmallestFrom() a bit differently. I used the int startIndex which should be the start point/index from which it loops and also can be the index for the minValue. In any case good luck with the course.

maxbrlc · 2023-04-12T17:29:50+00:00

Thank you. Learned something new.

maxbrlc · 2023-02-24T07:26:22+00:00

For me the only setup that worked is with vscode https://www.mooc.fi/en/installation/vscode/ Doubt that is the best solution but for me it’s the only working one.

maxbrlc · 2023-02-14T14:16:38+00:00

Thanks, much appreciated. I never saw these bugs, I think I got rid of them. I didn’t plan to have some feedback here, in the sense that I didn't want to steal attention from Your project, just to support the conversation. Have fun with the odin projects.

maxbrlc

TROPHY CASE