Stack and DFS

Hi
Please check the instruction of the task.

I also attached my attempt to do it, however there are some issues that I need to fix.
The attached zip file contains my attempt of the project, however The project only needs two files which are:
*MazeGenerator
to generate the maze using stack and DFS
*MazeSolverDFS
to solve the maze generated using DFS

Please check the attached instructions

you can use libraries to help solve this issue

Modeling an Object as a Java Class

1. Model a real-life object as a Java class with at least one attribute and an instance method. Write a main method to create an instance of the class, assign a value to the attribute, call your method, and demonstrate that the value of the attribute changed and that the method successfully completed what it was supposed to do.

Be sure to create a program different from any of the programs already posted by your classmates or the examples in-class materials.

2. Reply to another student’s post. Modify the student’s class to add another attribute and a method that fits (is consistent with) the object the class is modeling, or suggest a different version of the code. Write the main method to demonstrate the correct functionality of the additions. As you reply to the other students, try to reply to a post that does not have a reply yet, and if not; try to reply to a post with a fewer number of replies.

Be sure to create a program different from any of the programs already posted by your classmates or the examples in the class materials.

As you answer these questions, use proper Java naming convention (Camel case), name the class, attribute, and method in a meaningful way to represent the business meaning, and add comments to the Java code as applicable.

The deliverables are the Java code and the documentation. The documentation is a single Microsoft Word document, or PDF containing the screenshot of the results obtained by running the code.

Relational database

This is my post title: (( Relational database )) Please do the following:
Give a 1 paragraph explanation and definition of the term. Don’t use the definition from the original page.
Give a 10-20 word Laymen’s definition of the term. In other words, please define this concept in 10-20 words, but in words that anyone without knowledge of databases would understand. Must stay under 20 words.
Draw or illustrate this term in a picture/diagram. This can be a picture of the a drawing, or something more fancy.
Upload the answers for 1, 2, 3 as a response to your discussion post with your word/term claim.
Also, upload answer as a response to this question.

Module 1 Discussion

How can the practice of information security be described as both an art and a science? How does the view of security as a social science influence its practice?
Post your initial substantive response early and check back often to continue the discussion. Be sure to respond to at least two posts from other students or your instructor.
Respond to two or more of your classmate’s postings in any of the following ways:
Build on something your classmate said.
Explain why and how you see things differently.
Ask a probing or clarifying question.
Share an insight from having read your classmate’s posting.
Offer and support an opinion.
Expand on your classmate’s posting.

PROGRAMMING HELP, TM111, SCRATCH PROGRAM ASSISTANCE REQUIRED. HELP Required ASAP

It requires a when[space]key_pressed script that will take a word from the user and display a new word that is the same as the original except that all letters in the second half of the alphabet (n to z inclusive) have been removed.
The user should input the word as a single string and the new word that is displayed should be a single string.
For example, if the user enters
‘rhinocerous’
then
‘hice’
is displayed.
a.Create and write down an algorithm to solve this problem. You might like to use the ideas above, or alternatives of your own.
(10 marks)
b.Create a when[space]key_pressed script to implement your algorithm. Depending on your algorithm and the way in which you choose to implement it, you may also decide to have a when_green_flag_clicked script.
Take a screenshot of your script(s) and paste it into your TMA document.
(11 marks)
c.Copy the following table into your TMA document and add to it two tests you would perform to check whether the completed program fulfils the specification. (Several tests might be appropriate: you are only required to add two.)
Test numberTest purposeInputsExpected resultsWordNew word displayed1No letters in second half of alphabetcalfcalf2 3 (4 marks)

Deleting and Indexing Documents – NoSQL (MongoDB)

Follow the below steps:
Start off by deleting the entire collection cars.Take a screenshot of the query as well as the list of your collections in Atlas to be sure this collection has been deleted.

Next, run the following query to recreate the cars collection.The following includes more cars than before.

db.cars.insertMany([
{
make: “Hyundai”,
model: “Santa Fe”,
price: 8000,
year: 2003,
used: true,
color: “Black”
},
{
make: “BMW”,
model: “ALPINA B6 Gran Coupe”,
price: 124300,
year: 2017,
used: false,
color: “Mediterranean Blue Metallic”
},
{
make: “Subaru”,
model: “Crosstrek 2.0i Premium”,
price: 22595,
year: 2014,
used: true,
color: “Sunshine Orange”
},
{
make: “Ford”,
model: “F-350 XL”,
price: 33705,
year: 2017,
used: false,
color: “Race Red”
},
{
make: “Toyota”,
model: “Acura MDX”,
price: 28800,
year: 2014,
used: true,
color: “Graphite Luster Metallic”
},
{
make: “BMW”,
model: “5 Series 535i Sedan”,
price: 18995,
year: 2013,
used: true,
color: “Space Gray Metallic”
},
{
make: “Ford”,
model: “Escape”,
price: 7480,
year: 2011,
used: true,
color: “Sterling Grey Metallic”
},
{
make: “Subaru”,
model: “Impreza”,
price: 18495,
year: 2018,
used: false,
color: “Crimson Red Pearl”
},
{
make: “Toyota”,
model: “Yaris”,
price: 15635,
year: 2018,
used: false,
color: “Super White”
},
{
make: “Honda”,
model: “Civic LX”,
price: 14999,
year: 2016,
used: true,
color: “Crystal Black Pearl”
},
{
make: “Volkswagen”,
model: “Jetta 1.4T S”,
price: 19495,
year: 2018,
used: false,
color: “Silk Blue Metallic”
}
]);
Create an index on the price field.
Create an index on the used field for the cars collection.
Find and delete all documents with a year before 2012.Be sure to do a find with your filtering criteria first to be sure you’re about to delete the correct documents.

Delete the first document that is a BMW.
Drop the index created on the non-used cars created above.
Part 2Below is a real-life scenario. Please read this scenario and run the appropriate queries needed.
You are currently working for a car dealership. They sell both used and new cars. The company would like to easily and efficiently search through their cars using the “make” of the car. Recently, they made the searching efficient using the price of the car, but that is no longer needed since they will now be using the make of the vehicles. Please reflect that in the database. Also, the company has decided to no longer sell Volkswagens and has already sold the last Volkswagen on the lot so they would like you to reflect that in the database as well.