nancy | Minimal Ruby microframework for web development | Runtime Evironment library

I am writing a class (s3) that should use a constructor to create an instance for the class, at least for a start. The constructor junction(name, left, right). Where name is the description of a node in a classification tree.

So I have a class called junction having 3 entries as indicated above.

Suppose I got an object defined as such:

I have two collects students and classes, and I want to query the all students with their free classes.

Mongo Playground at https://mongoplayground.net/p/WwON7lHbAvn

Collection students

I would like to display a data from .txt report file using JavaFX. In my code, I'm trying to use Labels and Vbox to display the info in multiple formats in a GUI to scene. However, I'm having terrible outputting my results as GUI instead of the console. I tried to research my issue but I couldn't find the piece of info that I need to solve the problem.

This is the report I need to display as a GUI Application using JavaFX:

This is what my code displays as a GUI:

Here is my source code:

I am trying to sort an array users that have don't have the InvitesApplication.createdAt -> the user that have lastest createdAt in this team.

Here is my code sand box for an example: https://codesandbox.io/s/jovial-pasteur-seusw?file=/src/App.js

Update add code into question:

I have a question that sorts data from a car report of txt file.

The question is: How do I listed cars sorted by their MAKE (Ford, Chevy ..etc). They only need the MAKE to be sorted so they can be all FORD cars under each other, then Chevy, DODGE .. so on and so forth like this:

And this is what I have so far:

Here's my source code:

I have a Java question that deals with reading the txt file and pulling data from it.

It's a bunch of used cars stored in a txt report file. They have several different lots that they sell from. The lots are identified by the 5 digit zip code followed by a zip code extension at the beginning of each record. They would like a report that lists all cars sold from all lots. This is what I come up with:

They would like the report to list 30 cars per page, on the report. Each page is to have headings and a page number. Like this:

My question is how do I list 30 cars per page instead of all together (Each page 30 cars with headings and page #)?

Here's my source code:

I'm trying to write a query in SQL to return an employee's first + lastname and their manager's first + last name from the same "employee" table. Each employee has an employeeid and a "reportsto" column which contains the employeeid of their manager.

This is what I have so far that returns the first part (an employee's first + lastname and the id of who the report to)

I have a scenario where I need to identify the unique sales person on 12/1/20. Of those identified on this date, how many sales person had sold products in the prior 60 days period.

Repeat the same process for 12/2/20, of those sales persons, how many sales person had sold products in the prior 60 days period before 12/2/20. so on and so on until 3/31/21. I was able to do in one date or specific dates. Is there a while loop or something in similar in SQL sever that can tackle this task?

Example: