1st question ans

PHOTO EMBED

Tue Jun 06 2023 09:03:41 GMT+0000 (Coordinated Universal Time)

Saved by @codehub #c++ 

#include <iostream>
#include <vector>

class Person {
public:
    Person(int id) : id(id) {}

    int getId() const {
        return id;
    }

private:
    int id;
};

class Building {
public:
    Building(int levels) : levels(levels) {
        constructBuilding();
    }

    void constructBuilding() {
        int totalPeople = (1 << levels) - 1; // Calculate the total number of people in the building
        people.resize(totalPeople);

        // Create people with their respective IDs
        for (int i = 0; i < totalPeople; ++i) {
            people[i] = Person(i + 1);
        }
    }

    void exitOrder() {
        for (int i = levels - 1; i >= 0; --i) {
            int levelOffset = (1 << i) - 1; // Offset for each level
            int levelSize = (1 << i); // Number of people on each level

            for (int j = 0; j < levelSize; ++j) {
                int personIndex = levelOffset + j;
                std::cout << people[personIndex].getId() << " ";
            }
        }
        std::cout << std::endl;
    }

    void entryOrder() {
        for (int i = 0; i < levels; ++i) {
            int levelOffset = (1 << i) - 1; // Offset for each level
            int levelSize = (1 << i); // Number of people on each level

            for (int j = 0; j < levelSize; ++j) {
                int personIndex = levelOffset + j;
                std::cout << people[personIndex].getId() << " ";
            }
        }
        std::cout << std::endl;
    }

private:
    int levels;
    std::vector<Person> people;
};

int main() {
    int levels;
    std::cout << "Enter the number of levels in the building: ";
    std::cin >> levels;

    Building building(levels);

    std::cout << "Exit Order: ";
    building.exitOrder();

    std::cout << "Entry Order: ";
    building.entryOrder();

    return 0;
}
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