HackerRank_Box It!

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Prepare > C++ > Classes > Box It!

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문제 설명

Design a class named Box whose dimensions are integers and private to the class. The dimensions are labelled: length l, breadth b, and height h.

The default constructor of the class should initialize l, b, and h to 0.

The parameterized constructor Box(int length, int breadth, int height) should initialize Box's l, b and h to length, breadth and height.

The copy constructor Box(Box B) should set l, b and h to B's l, b and h, respectively.

Apart from the above, the class should have 4 functions:

int getLength() - Return box's length
int getBreadth() - Return box's breadth
int getHeight() - Return box's height
long long CalculateVolume() - Return the volume of the box
Overload the operator for the class Box. Box A < Box B if:

1. A.l < B.l
2. A.b < B.b and A.l == B.l
3. A.h < B.h and A.b == B.b and A.l == B.l
   Overload operator << for the class Box().
   If B is an object of class Box:

cout << B should print B.l, B.b and B.h on a single line separated by spaces.

For example,

Box b1; // Should set b1.l = b1.b = b1.h = 0;
Box b2(2, 3, 4); // Should set b1.l = 2, b1.b = 3, b1.h = 4;
b2.getLength();	// Should return 2
b2.getBreadth(); // Should return 3
b2.getheight();	// Should return 4
b2.CalculateVolume(); // Should return 24
bool x = (b1 < b2);	// Should return true based on the conditions given
cout<<b2; // Should print 2 3 4 in order.

문제 조건

• 0 ≤ l, b, h ≤ 10^5
• Two boxes being compared using the < operator will not have all three dimensions equal.

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코드

class Box {
	int l, b, h;

public:
	Box() : l(0), b(0), h(0) {};
	Box(int length, int breadth, int height) : l(length), b(breadth), h(height) {};
	Box(Box& B) {
		l = B.getLength();
		b = B.getBreadth();
		h = B.getHeight();
	};
	int getLength() {
		return l;
	}
	int getBreadth() {
		return b;
	}
	int getHeight() {
		return h;
	}
	long long CalculateVolume() {
		return (long long) l * b * h;
	}
	bool operator<(Box& b) {
		if (l < b.getLength()) {
			return true;
		}
		else if (this->b < b.getBreadth() && l == b.getLength()) {
			return true;
		}
		else if (h < b.getHeight() && this->b == b.getBreadth() && l == b.getLength()) {
			return true;
		}
		else {
			return false;
		}
	}
};

ostream& operator<<(ostream& out, Box& B) {
	out << B.getLength() << " " << B.getBreadth() << " " << B.getHeight();
	return out;
}

전체 코드

#include<bits/stdc++.h>
using namespace std;

class Box {
	int l, b, h;

public:
	Box() : l(0), b(0), h(0) {};
	Box(int length, int breadth, int height) : l(length), b(breadth), h(height) {};
	Box(Box& B) {
		l = B.getLength();
		b = B.getBreadth();
		h = B.getHeight();
	};
	int getLength() {
		return l;
	}
	int getBreadth() {
		return b;
	}
	int getHeight() {
		return h;
	}
	long long CalculateVolume() {
		return (long long) l * b * h;
	}
	bool operator<(Box& b) {
		if (l < b.getLength()) {
			return true;
		}
		else if (this->b < b.getBreadth() && l == b.getLength()) {
			return true;
		}
		else if (h < b.getHeight() && this->b == b.getBreadth() && l == b.getLength()) {
			return true;
		}
		else {
			return false;
		}
	}
};

ostream& operator<<(ostream& out, Box& B) {
	out << B.getLength() << " " << B.getBreadth() << " " << B.getHeight();
	return out;
}

void check2()
{
	int n;
	cin >> n;
	Box temp;
	for (int i = 0; i < n; i++)
	{
		int type;
		cin >> type;
		if (type == 1)
		{
			cout << temp << endl;
		}
		if (type == 2)
		{
			int l, b, h;
			cin >> l >> b >> h;
			Box NewBox(l, b, h);
			temp = NewBox;
			cout << temp << endl;
		}
		if (type == 3)
		{
			int l, b, h;
			cin >> l >> b >> h;
			Box NewBox(l, b, h);
			if (NewBox < temp)
			{
				cout << "Lesser\n";
			}
			else
			{
				cout << "Greater\n";
			}
		}
		if (type == 4)
		{
			cout << temp.CalculateVolume() << endl;
		}
		if (type == 5)
		{
			Box NewBox(temp);
			cout << NewBox << endl;
		}

	}
}

int main()
{
	check2();
}

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입력

5
2 3 4 5
4
5
4
2 4 6 7

출력

3 4 5
60
3 4 5
60
4 6 7