Box It! In C++ | HackerRank Solution

Well coders,

Today we will be solving Box It in C++ HackerRank Solution.

Objective

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 l, int breadth b, int height h) should initialize Box’s and 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.

Constraints

0 <= l,b,h <= 10⁵

Two boxes being compared using the < operator will not have all three dimensions equal.

Solution – Box It In C++ HackerRank Solution

#include<bits/stdc++.h>

using namespace std;
//Implement the class Box  
//l,b,h are integers representing the dimensions of the box

// The class should have the following functions : 

// Constructors: 
// Box();
// Box(int,int,int);
// Box(Box);


// 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 operator < as specified
//bool operator<(Box& b)

//Overload operator << as specified
//ostream& operator<<(ostream& out, Box& B)
class Box{
    private :
            int l,b,h;
    public:
    Box(){l=b=h=0;}
    Box(int len,int br,int hg){
        l = len;
        b = br;
        h = hg;
    }
    Box(const Box& B){
        l = B.l;
        b = B.b;
        h = B.h;
    }
        int getLenght(){
        return l;
    }
    int getBreadth(){
        return b;
    }
    int getHeight(){
        return h;
    }
    long long CalculateVolume(){
        return (long long)l*b*h;
    }
    friend bool operator < ( Box&A,Box& B){
        if( (A.l < B.l) || ((A.b < B.b) && (A.l == B.l)) || ((A.h < B.h) && (A.l == B.l) && (A.b == B.b)) ){
            return true;
        }else{
            return false;
        }
    };
    
    friend ostream& operator<< (ostream& output, const Box& B){
        output << B.l << " " << B.b << " " << B.h;
        return output;
    }
};


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();
}

Disclaimer: The above Problem (Box It!) is generated by Hacker Rank but the Solution is provided by CodingBroz.

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