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Hotel Prices in C++ - Hacker Rank Solutions

#include <iostream>

#include <vector>

/*****Aakash Vikrant

KIET GROUP OF INSTITUTIONS*****/

using namespace std;


class HotelRoom { 

    public: HotelRoom(int bedrooms, int bathrooms) : bedrooms_(bedrooms), bathrooms_(bathrooms) {}


virtual int get_price() { 

    return 50*bedrooms_ + 100*bathrooms_; 

} 

private: int bedrooms_; int bathrooms_; 

};


class HotelApartment : public HotelRoom { 

    public: HotelApartment(int bedrooms, int bathrooms) : HotelRoom(bedrooms, bathrooms) {}

int get_price() {

    return HotelRoom::get_price() + 100;

}

};

int main() {

    int n;

    cin >> n;

    vector<HotelRoom*> rooms;

    for (int i = 0; i < n; ++i) {

        string room_type;

        int bedrooms;

        int bathrooms;

        cin >> room_type >> bedrooms >> bathrooms;

        if (room_type == "standard") {

            rooms.push_back(new HotelRoom(bedrooms, bathrooms));

        } else {

            rooms.push_back(new HotelApartment(bedrooms, bathrooms));

        }

    }


    int total_profit = 0;

    for (auto room : rooms) {

        total_profit += room->get_price();

    }

    cout << total_profit << endl;


    for (auto room : rooms) {

        delete room;

    }

    rooms.clear();


    return 0;

}

Welcome to Java! - Hacker Rank Solution

public class Solution
{
/***Aakash Vikrant ***
*Kiet group of institutions*/
public static void main(String []argv) {
System.out.println("Hello World."); System.out.println("Hello Java.");
//Write your solution here.
}
}

Time Conversion in Algorithm - Hacker Rank Solutions

#include<stdio.h> 

#include<conio.h> 

#include<dos.h> 

#include<math.h> 

#include<string.h> 

/*****Aakash Vikrant

*Kiet Group of Institutions**/ 

int main() 

{ 

int hh, mm, ss ; 

char t12[3]; 

scanf("%d:%d:%d%s", &hh, &mm, &ss, t12); 

if (strcmp(t12,"PM")==0 && hh!=12) 

{

   hh += 12 ; 

}

if (strcmp(t12,"AM")==0 && hh==12) 

{

   hh = 0 ;

} 

printf("%02d:%02d:%02d", hh, mm, ss); 

return 0; 

}



By Aakash Vikrant  May 26, 2020

Birthday Cake Candles in Algorithm - Hacker Rank Solutions

#include <iostream>

/*****Aakash Vikrant

**Kiet Group of Institutions**/

int main()

{

    int c, n, max = 0;

    std::cin.ignore();

    while(std::cin >> n)

  max < n ? c = !!(max = n) : c += max == n;

    std::cout << c;

    return 0;

}

Introduction to algorithms

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Attending Workshops in C++


#include<bits/stdc++.h>

using namespace std;

/*****Aakash Vikrant

**Kiet Group of Institutions**/

//Define the structs Workshops and Available_Workshops.

//Implement the functions initialize and CalculateMaxWorkshops

struct Workshops 

{

    int start_time;

    int duration;

    int end_time; 

};

struct Available_Workshops 

{

    int n;

    vector <Workshops> w;

};

Available_Workshops *initialize(int *start_time, int *duration, int n) 

{

    Available_Workshops *paw=new(Available_Workshops);

    Workshops ws;

        paw->n=n;

    for (int i=0;i<n;i++) 

{

        //construct a Workshops

        ws.start_time=start_time[i];

        ws.duration=duration[i];

        ws.end_time=start_time[i]+duration[i];

        paw->w.push_back(ws);   

    }

      return paw;    

}

bool compare(Workshops w1, Workshops w2) 

{ 

    return (w1.end_time < w2.end_time); 

}

int CalculateMaxWorkshops(Available_Workshops* ptr) 

{

    // sort workshops by end_time

    sort(ptr->w.begin(),ptr->w.end(),compare); 

        // interval scheduling

    int last_processed_time=-1;

    int maxWorkshops=0;

    for (int i=0;i<ptr->n;i++) 

{

        if (ptr->w[i].start_time >= last_processed_time) 

{

            last_processed_time=ptr->w[i].end_time;

            maxWorkshops++;

        }

    }

    return maxWorkshops;

}

int main(int argc, char *argv[]) 

{

    int n; // number of workshops

    cin >> n;

    // create arrays of unknown size n

    int* start_time = new int[n];

    int* duration = new int[n];

    for(int i=0; i < n; i++)

{

        cin >> start_time[i];

    }

    for(int i = 0; i < n; i++)

{

        cin >> duration[i];

    }

    Available_Workshops * ptr;

    ptr = initialize(start_time,duration, n);

    cout << CalculateMaxWorkshops(ptr) << endl;

    return 0;

}

C++ Class Template Specialization



By Aakash Vikrant  June 06, 2020

#include <iostream>

using namespace std;

enum class Fruit { apple, orange, pear };

enum class Color { red, green, orange };

/*****Aakash Vikrant**

*Kiet Group of Institutions**/

template <typename T> struct Traits;

// Define specializations for the Traits class template here.

template <> 

struct Traits<Fruit>{

    static string name(int index)

{

        switch(index)

{

                case 0:return "apple";

                case 1: return "orange" ;

                case 2: return "pear";

        }  

        return "unknown";

    } 

};

template <> 

struct Traits<Color>

{

    static string name(int index)

{

        switch(index)

{

                case 0:return "red";

                case 1: return "green" ;

                case 2: return "orange";           

        }

        return "unknown";  

    } 

};

int main()

{

int t = 0; std::cin >> t;

    for (int i=0; i!=t; ++i) 

{

        int index1; std::cin >> index1;

        int index2; std::cin >> index2;

        cout << Traits<Color>::name(index1) << " ";

        cout << Traits<Fruit>::name(index2) << "\n";

    }

}

Time Conversion in Algorithm

#include<stdio.h> 

#include<conio.h> 

#include<dos.h> 

#include<math.h> 

#include<string.h> 

/*****Aakash Vikrant

*Kiet Group of Institutions**/ 

int main() 

{ 

int hh, mm, ss ; 

char t12[3]; 

scanf("%d:%d:%d%s", &hh, &mm, &ss, t12); 

if (strcmp(t12,"PM")==0 && hh!=12) 

{

   hh += 12 ; 

}

if (strcmp(t12,"AM")==0 && hh==12) 

{

   hh = 0 ;

} 

printf("%02d:%02d:%02d", hh, mm, ss); 

return 0; 

}

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