Java.

Hotel Reviews

1 Objective

In this project, you'll read in and manage hotel reviews from several reviewers. This will require you to create a two-dimensional array (reviewers x hotels) as well as parallel arrays to hold associated data. You'll also implement a sorting algorithm which will require you not only to sort in the traditional way, but to maintain parallelism among data. There won't be any exciting UI here, just some output of array data, and hotel/review data coming from a file.

2 Input File

2.1 File

The input file will contain the following elements, in order:

• On the first line, an integer indicating how many hotels were reviewed (h), followed by an integer indicating how many reviewers have provided data (r).
• On the nextrlines, a sequence ofhintegers, each a review score in the range 1 to 10.
• Once the review data is finished, the followinghlines will contain the hotels titles.
• Data elements are tokenized (separated by space (or spaces), tabs, etc.

2.2 Example Contents (Use this file as an example of data)

______________________________________________

5 4

7 7 8 6 9

5 9 9 7 10

7 10 7 9 8

10 8 9 10 9

Grand Solmar Lands End Resort and Spa

Sandos Finisterra Los Cabos

Grand Fiesta Americana Los Cabos

Marina Fiesta Resort & Spa

RIU Santa Fe

______________________________________________

The example file's contents are interpreted as follows:

• Four reviewers participated, reviewing five hotels.
• The first reviewer gave the first hotel "7", the second hotel "7", and the third "8" and so on. Next reviewers scores follow in similar fashion.
• The five hotels reviewed are titled "Grand Solmar Lands End Resort and Spa," "Sandos Finisterra Los Cabos," "Grand Fiesta Americana Los Cabos," "Marina Fiesta Resort & Spa," and "RIU Santa Fe" respectively.

3 Concepts

3.1 Read the Data

You'll need to read the file's hotel review contents into an array calledreviews. The hotel names will be in a parallel array calledhotels, i.e., column 0 inreviews matches item 0 in thehotels array.

3.2 Create an Average Ranking Array

Now you'll create an array to hold average rankings per hotel (avgRanks) and populate it. In this example, the first hotel would average (7+5+7+10+)/4 = 7.25, the second 8.5, the third 8.25, the fourth 8.0, and fifth 9.0. This means you now have three parallel arrays:reviews, hotels, and avgRanks.

3.3 Sort the Arrays by Average Ranking

You should sort tree arrays (reviews, hotels, and avgRanks). The hotel with the highest average ranking comes first and the one with the lowest ranking last. But remember to maintain parallel data as well; hotels and reviews need to move in lockstep with the ranked review data.

After sorting, you must get next result:

Array avgRanks

9

8.5

8.25

8

7.25

Array reviews

9	7	8	6	7
10	9	9	7	5
8	10	7	9	7
9	8	9	10	10

Array hotels

RIU Santa Fe

Sandos Finisterra Los Cabos

Grand Fiesta Americana Los Cabos

Marina Fiesta Resort & Spa

Grand Solmar Lands End Resort and Spa

4 Class

Create HotelReviews class and use it for this project. No other class-level data should be needed, other than the private data shown.

HotelReviews

-hotels : Array of String

-reviews : 2D Array of Integer

-avgRanks : Array of Double

Constructors

+HotelReviews(File)

Accessors

+getHotelCount() : Integer

+getRankHotel(review : Integer, hotel : Integer) : Integer

+getHotel(index : Integer) : String

+getAvgRank(index : Integer) : Double

Private Methods

-readData(File)

-calculateAvgRankings()

Other Methods

+displayReviews()

+displayAvgRanks()

+displayHotels()

+sortByRanking()

+test()

The constructor should onlycall methods readData and calculateAvgRankings (private methods).

5 Code Implementation

Create amainclass which creates new instance of theHotelReviews class, reads data from the file, and displays all arrays before and after sorting. See examples of output.

6 Testing

• Write test methods for each of your methods. You don't need to test the display* methods.
• Test with different numbers of hotels and reviewers to make sure your algorithms are correct.
• Manual inspection will be necessary; the debugger is your friend and will be very useful here.

7 Submitting Your Work

• Submit your .jar or .zip file
• If your test method relies on test files, be sure and include them in your submission.

Examples of Output:

Row Reviews

7 7 8 6 9

5 9 9 7 10

7 10 7 9 8

10 8 9 10 9

Average Rankings

7.25 8.5 8.25 8.0 9.0

Hotels

Grand Solmar Lands End Resort and Spa

Sandos Finisterra Los Cabos

Grand Fiesta Americana Los Cabos

Marina Fiesta Resort & Spa

RIU Santa Fe

Ranked Reviews

9 7 8 6 7

10 9 9 7 5

8 10 7 9 7

9 8 9 10 10

Hotels Rating

RIU Santa Fe 9.0

Sandos Finisterra Los Cabos8.5

Grand Fiesta Americana Los Cabos8.25

Marina Fiesta Resort & Spa8.0

Grand Solmar Lands End Resort and Spa7.25

BlueJ: Terminal Window - HotelReview X Examples of Output Options Row Reviews 7 Before Sorting: 7 8 9 5 9 Row Reviews 9 10 7 10 8 g 10 10 g 10 7 10 9 8 10 8 10 Average Rankings Average Rankings 7.25 8.5 8.25 8.0 9.0 7.25 8.5 8.25 8.0 9.0 Hotels Hotels Grand Solmar Lands End Resort and Spa Grand Solmar Lands End Resort and Spa Sandos Finisterra Los Cabos Sandos Finisterra Los Cabos Grand Fiesta Americana Los Cabos Grand Fiesta Americana Los Cabos Marina Fiesta Resort & Spa Marina Fiesta Resort & Spa RIU Santa Fe After Sorting: Row Reviews Ranked Reviews 7 9 5 9 10 10 9 7 10 8 10 10 8 10 8 10 10 Average Rankings -1.0 -1.0 -1.0 -1.0 -1.0 Hotels Rating Hotels RIU Santa Fe 9.0 Sandos Finisterra Los Cabos 8.5 Grand Solmar Lands End Resort and Spa Grand Fiesta Americana Los Cabos 8.25 Sandos Finisterra Los Cabos Marina Fiesta Resort & Spa 8.0 Grand Fiesta Americana Los Cabos Marina Fiesta Resort & Spa Grand Solmar Lands End Resort and Spa 7.25 Can only enter input while your program is running