Hotel Management System

Given the data for Hotel management and User:
Hotel Data:

Hotel Name     Room Available     Location     Rating      Price per Room
H1                4               Bangalore      5           100
H2                5               Bangalore      5           200
H3                6               Mumbai         3           100

User Data:

User Name         UserID             Booking Cost
U1                 2                  1000
U2                 3                  1200
U3                 4                  1100

The task is to answer the following question.

1. Print the hotel data.
2. Sort hotels by Name.
3. Sort Hotel by highest rating.
4. Print Hotel data for Bangalore Location.
5. Sort hotels by maximum number of rooms Available.
6. Print user Booking data.

Machine coding round involves solving a design problem in a matter of a couple of hours. 
It requires designing and coding a clean, modular and extensible solution based on a specific set of requirements. 

Approach:

• Create classes for Hotel data and User data.
• Initialize variables that stores Hotel data and User data.
• Create Objects for Hotel and user classes that access the Hotel data and User data.
• initialize two vector array that holds the hotel data and user data.
• solve the Above questions one by one.

Below is the implementation of the above approach. 

C++

// C++ program to solve
// the given question

#include <algorithm>
#include <iostream>
#include <string>
#include <vector>

using namespace std;

// Create class for hotel data.
class Hotel {
public:
    string name;
    int roomAvl;
    string location;
    int rating;
    int pricePr;
};

// Create class for user data.
class User : public Hotel {
public:
    string uname;
    int uId;
    int cost;
};

// Function to Sort Hotels by
// Bangalore location
bool sortByBan(Hotel& A, Hotel& B)
{
    return A.name > B.name;
}

// Function to sort hotels
// by rating.
bool sortByr(Hotel& A, Hotel& B)
{
    return A.rating > B.rating;
}

// Function to sort hotels
// by rooms availability.
bool sortByRoomAvailable(Hotel& A,
                        Hotel& B)
{
    return A.roomAvl < B.roomAvl;
}

// Print hotels data.
void PrintHotelData(vector<Hotel> hotels)
{
    cout << "PRINT HOTELS DATA:" << endl;
    cout << "HotelName"
         << "   "
         << "Room Available"
         << "    "
         << "Location"
         << "    "
         << "Rating"
         << "    "
         << "PricePer Room:" << endl;

    for (int i = 0; i < 3; i++) {
        cout << hotels[i].name
             << "          "
             << hotels[i].roomAvl
             << "              "
             << hotels[i].location
             << "       "
             << hotels[i].rating
             << "            "
             << hotels[i].pricePr
             << endl;
    }
    cout << endl;
}

// Sort Hotels data by name.
void SortHotelByName(vector<Hotel> hotels)
{
    cout << "SORT BY NAME:" << endl;

    std::sort(hotels.begin(), hotels.end(),
              sortByBan);

    for (int i = 0; i < hotels.size(); i++) {
        cout << hotels[i].name << " "
             << hotels[i].roomAvl << " "
             << hotels[i].location << " "
             << hotels[i].rating << " "
             << " " << hotels[i].pricePr
             << endl;
    }
    cout << endl;
}

// Sort Hotels by rating
void SortHotelByRating(vector<Hotel> hotels)
{
    cout << "SORT BY A RATING:" << endl;

    std::sort(hotels.begin(),
              hotels.end(), sortByr);

    for (int i = 0; i < hotels.size(); i++) {
        cout << hotels[i].name << " "
             << hotels[i].roomAvl << " "
             << hotels[i].location << " "
             << hotels[i].rating << " "
             << " " << hotels[i].pricePr
             << endl;
    }
    cout << endl;
}

// Print Hotels for any city Location.
void PrintHotelBycity(string s,
                      vector<Hotel> hotels)
{
    cout << "HOTELS FOR " << s
         << " LOCATION IS:"
         << endl;
    for (int i = 0; i < hotels.size(); i++) {

        if (hotels[i].location == s) {

            cout << hotels[i].name << " "
                 << hotels[i].roomAvl << " "
                 << hotels[i].location << " "
                 << hotels[i].rating << " "
                 << " " << hotels[i].pricePr
                 << endl;
        }
    }
    cout << endl;
}

// Sort hotels by room Available.
void SortByRoomAvailable(vector<Hotel> hotels)
{
    cout << "SORT BY ROOM AVAILABLE:" << endl;

    std::sort(hotels.begin(), hotels.end(),
              sortByRoomAvailable);

    for (int i = hotels.size() - 1; i >= 0; i--) {

        cout << hotels[i].name << " "
             << hotels[i].roomAvl << " "
             << hotels[i].location << " "
             << hotels[i].rating << " "
             << " " << hotels[i].pricePr
             << endl;
    }
    cout << endl;
}

// Print the user's data
void PrintUserData(string userName[],
                   int userId[],
                   int bookingCost[],
                   vector<Hotel> hotels)
{

    vector<User> user;
    User u;

    // Access user data.
    for (int i = 0; i < 3; i++) {
        u.uname = userName[i];
        u.uId = userId[i];
        u.cost = bookingCost[i];
        user.push_back(u);
    }

    // Print User data.
    cout << "PRINT USER BOOKING DATA:"
         << endl;
    cout << "UserName"
         << " "
         << "UserID"
         << " "
         << "HotelName"
         << " "
         << "BookingCost" << endl;

    for (int i = 0; i < user.size(); i++) {
        cout << user[i].uname
             << "         "
             << user[i].uId
             << "        "
             << hotels[i].name
             << "         "
             << user[i].cost
             << endl;
    }
}

// Functiont to solve
// Hotel Management problem
void HotelManagement(string userName[],
                     int userId[],
                     string hotelName[],
                     int bookingCost[],
                     int rooms[],
                     string locations[],
                     int ratings[],
                     int prices[])
{
    // Initialize arrays that stores
    // hotel data and user data
    vector<Hotel> hotels;

    // Create Objects for
    // hotel and user.
    Hotel h;

    // Initialise the data
    for (int i = 0; i < 3; i++) {
        h.name = hotelName[i];
        h.roomAvl = rooms[i];
        h.location = locations[i];
        h.rating = ratings[i];
        h.pricePr = prices[i];
        hotels.push_back(h);
    }
    cout << endl;

    // Call the various operations
    PrintHotelData(hotels);
    SortHotelByName(hotels);
    SortHotelByRating(hotels);
    PrintHotelBycity("Bangalore",
                     hotels);
    SortByRoomAvailable(hotels);
    PrintUserData(userName,
                  userId,
                  bookingCost,
                  hotels);
}

// Driver Code.
int main()
{

    // Initialize variables to stores
    // hotels data and user data.
    string userName[] = { "U1", "U2", "U3" };
    int userId[] = { 2, 3, 4 };
    string hotelName[] = { "H1", "H2", "H3" };
    int bookingCost[] = { 1000, 1200, 1100 };
    int rooms[] = { 4, 5, 6 };
    string locations[] = { "Bangalore",
                           "Bangalore",
                           "Mumbai" };
    int ratings[] = { 5, 5, 3 };
    int prices[] = { 100, 200, 100 };

    // Function to perform operations
    HotelManagement(userName, userId,
                    hotelName, bookingCost,
                    rooms, locations,
                    ratings, prices);

    return 0;
}

Python3

# Python program to solve
# the given question

# Create class for hotel data.
class Hotel :
    sortParam='name'
    def __init__(self) -> None:
        self.name=''
        self.roomAvl=0
        self.location=''
        self.rating=int
        self.pricePr=0

    def __lt__(self,other):
        getattr(self,Hotel.sortParam)<getattr(other,Hotel.sortParam)

    # Function to change sort parameter to
    # name
    @classmethod
    def sortByName(cls):
        cls.sortParam='name'

    # Function to change sort parameter to
    # rating.
    @classmethod
    def sortByRate(cls):
        cls.sortParam='rating'

    # Function to change sort parameter to
    # room availability.
    @classmethod
    def sortByRoomAvailable(cls)    :
        cls.sortParam='roomAvl'

    def __repr__(self) -> str:
        return "PRHOTELS DATA:\nHotelName:{}\tRoom Available:{}\tLocation:{}\tRating:{}\tPricePer Room:{}".format(self.name,self.roomAvl,self.location,self.rating,self.pricePr)


# Create class for user data.
class User:
    def __init__(self) -> None:
        self.uname=''
        self.uId=0
        self.cost=0

    def __repr__(self) -> str:
        return "UserName:{}\tUserId:{}\tBooking Cost:{}".format(self.uname,self.uId,self.cost)




# Print hotels data.
def PrintHotelData(hotels):
    for h in hotels:
        print(h)


# Sort Hotels data by name.
def SortHotelByName(hotels):
    print("SORT BY NAME:")

    Hotel.sortByName()
    hotels.sort()

    PrintHotelData(hotels)
    print()


# Sort Hotels by rating
def SortHotelByRating(hotels):
    print("SORT BY A RATING:")

    Hotel.sortByRate()
    hotels.sort()

    PrintHotelData(hotels)
    print()


# Print Hotels for any city Location.
def PrintHotelBycity(s,hotels):
    print("HOTELS FOR {} LOCATION ARE:".format(s))
    hotelsByLoc=[h for h in hotels if h.location==s]

    PrintHotelData(hotelsByLoc)
    print()



# Sort hotels by room Available.
def SortByRoomAvailable(hotels):
    print("SORT BY ROOM AVAILABLE:")
    Hotel.sortByRoomAvailable()
    hotels.sort()
    PrintHotelData(hotels)
    print()


# Print the user's data
def PrintUserData(userName, userId, bookingCost, hotels):
    users=[]
    # Access user data.
    for i in range(3) :
        u=User()
        u.uname = userName[i]
        u.uId = userId[i]
        u.cost = bookingCost[i]
        users.append(u)

    for i in range(len(users)) :
        print(users[i],"\tHotel name:",hotels[i].name)



# Functiont to solve
# Hotel Management problem
def HotelManagement(userName,
                     userId,
                     hotelName,
                     bookingCost,
                     rooms,
                     locations,
                     ratings,
                     prices):
    # Initialize arrays that stores
    # hotel data and user data
    hotels=[]

    # Create Objects for
    # hotel and user.

    # Initialise the data
    for i in range(3) :
        h=Hotel()
        h.name = hotelName[i]
        h.roomAvl = rooms[i]
        h.location = locations[i]
        h.rating = ratings[i]
        h.pricePr = prices[i]
        hotels.append(h)

    print()

    # Call the various operations
    PrintHotelData(hotels)
    SortHotelByName(hotels)
    SortHotelByRating(hotels)
    PrintHotelBycity("Bangalore",
                     hotels)
    SortByRoomAvailable(hotels)
    PrintUserData(userName,
                  userId,
                  bookingCost,
                  hotels)


# Driver Code.
if __name__ == '__main__':

    # Initialize variables to stores
    # hotels data and user data.
    userName = ["U1", "U2", "U3"]
    userId = [2, 3, 4]
    hotelName = ["H1", "H2", "H3"]
    bookingCost = [1000, 1200, 1100]
    rooms = [4, 5, 6]
    locations = ["Bangalore",
                           "Bangalore",
                           "Mumbai"]
    ratings = [5, 5, 3]
    prices = [100, 200, 100]

    # Function to perform operations
    HotelManagement(userName, userId,
                    hotelName, bookingCost,
                    rooms, locations,
                    ratings, prices)

Javascript

// javascript program to solve
// the given question

// Create class for hotel data.
class Hotel {

    constructor(){
        this.name = "";
        this.roomAvl = 0;
        this.location = "";
        this.rating = 0;
        this.pricePr = 0;
    }
}

// Create class for user data.
class User{

    constructor(){
        this.uname = "";
        this.uId = 0;
        this.cost = 0;
    }
}

// Function to Sort Hotels by
// Bangalore location
function sortByBan(A, B)
{
    return B.name.localeCompare(A.name);
}

// Function to sort hotels
// by rating.
function sortByr(A, B)
{
    return A.rating > B.rating;
}

// Function to sort hotels
// by rooms availability.
function sortByRoomAvailable(A, B)
{
    return A.roomAvl < B.roomAvl;
}

// Print hotels data.
function PrintHotelData(hotels)
{
    console.log("PRINT HOTELS DATA:");
    console.log("HotelName"
         + "   "
         + "Room Available"
         + "    "
         + "Location"
         + "    "
         + "Rating"
         + "    "
         + "PricePer Room:");

    for (let i = 0; i < 3; i++) {
        console.log(hotels[i].name
             + "          "
             + hotels[i].roomAvl
             + "              "
             + hotels[i].location
             + "       "
             + hotels[i].rating
             + "            "
             + hotels[i].pricePr);
    }
    console.log();
}

// Sort Hotels data by name.
function SortHotelByName(hotels)
{
    console.log("SORT BY NAME:");

    hotels.sort(sortByBan);
    // console.log("h9");
    // console.log(hotels);
    for (let i = 0; i < hotels.length; i++) {
        console.log(hotels[i].name + " " + hotels[i].roomAvl + " "
             + hotels[i].location + " "
             + hotels[i].rating + " "
             + " " + hotels[i].pricePr);
    }
    console.log();
}

// Sort Hotels by rating
function SortHotelByRating(hotels)
{
    console.log("SORT BY A RATING:");

    hotels.sort(sortByr);

    for (let i = 0; i < hotels.length; i++) {
        console.log(hotels[i].name + " "
             + hotels[i].roomAvl + " "
             + hotels[i].location + " "
             + hotels[i].rating + " "
             + " " + hotels[i].pricePr);
    }
    console.log();
}

// Print Hotels for any city Location.
function PrintHotelBycity(s, hotels)
{
    console.log("HOTELS FOR " + s + " LOCATION IS:");

    for (let i = 0; i < hotels.length; i++) {

        if (hotels[i].location == s) {

            console.log(hotels[i].name + " "
                 + hotels[i].roomAvl + " "
                 + hotels[i].location + " "
                 + hotels[i].rating + " "
                 + " " + hotels[i].pricePr);
        }
    }
    console.log();
}

// Sort hotels by room Available.
function SortByRoomAvailable(hotels)
{
    console.log("SORT BY ROOM AVAILABLE:");

    hotels.sort(sortByRoomAvailable);
    for (let i = hotels.length - 1; i >= 0; i--) {

        console.log(hotels[i].name + " " + hotels[i].roomAvl + " " + hotels[i].location + " " + hotels[i].rating + " " +hotels[i].pricePr);
    }
    console.log();
}

// Print the user's data
function PrintUserData(userName,
                   userId,
                   bookingCost, hotels)
{

    let user = [];


    // Access user data.
    for (let i = 0; i < 3; i++) {
        let u = new User();
        u.uname = userName[i];
        u.uId = userId[i];
        u.cost = bookingCost[i];
        user.push(u);
    }

    // Print User data.
    console.log("PRINT USER BOOKING DATA:")
    console.log("UserName UserID HotelName BookingCost")

    for (let i = 0; i < user.length; i++) {
        console.log(user[i].uname + "         " + user[i].uId + "        " + hotels[i].name + "         " + user[i].cost);
    }
}

// Functiont to solve
// Hotel Management problem
function HotelManagement(userName,userId, hotelName,
bookingCost, rooms, locations, ratings, prices)
{
    // Initialize arrays that stores
    // hotel data and user data
    let hotels = [];

    // Create Objects for
    // hotel and user.


    // Initialise the data
    for (let i = 0; i < 3; i++) {
        let h = new Hotel();
        h.name = hotelName[i];
        h.roomAvl = rooms[i];
        h.location = locations[i];
        h.rating = ratings[i];
        h.pricePr = prices[i];
        hotels.push(h);
    }
    console.log();

    // Call the various operations
    PrintHotelData(hotels);
    SortHotelByName(hotels);
    SortHotelByRating(hotels);
    PrintHotelBycity("Bangalore", hotels);
    SortByRoomAvailable(hotels);
    PrintUserData(userName, userId, bookingCost, hotels);
}

// Driver Code.
// Initialize variables to stores
// hotels data and user data.
let userName = ["U1", "U2", "U3"];
let userId = [2, 3, 4];
let hotelName = ["H1", "H2", "H3" ];
let bookingCost = [1000, 1200, 1100 ];
let rooms = [4, 5, 6 ];
let locations = ["Bangalore", "Bangalore", "Mumbai" ];
let ratings = [5, 5, 3 ];
let prices = [100, 200, 100 ];

// Function to perform operations
HotelManagement(userName, userId, hotelName, bookingCost,
rooms, locations, ratings, prices);

// the code is contributed by Nidhi goel.

Output

PRINT HOTELS DATA:
HotelName   Room Available    Location    Rating    PricePer Room:
H1          4              Bangalore       5            100
H2          5              Bangalore       5            200
H3          6              Mumbai       3            100

SORT BY NAME:
H3 6 Mumbai 3  100
H2 5 Bangalore 5  200
H1 4 Bangalore 5  100

SORT BY A RATING:
H1 4 Bangalore 5  100
H2 5 Bangalore 5  200
H3 6 Mumbai 3  100

HOTELS FOR Bangalore LOCATION IS:
H1 4 Bangalore 5  100
H2 5 Bangalore 5  200

SORT BY ROOM AVAILABLE:
H3 6 Mumbai 3  100
H2 5 Bangalore 5  200
H1 4 Bangalore 5  100

PRINT USER BOOKING DATA:
UserName UserID HotelName BookingCost
U1         2        H1         1000
U2         3        H2         1200
U3         4        H3         1100