Box It! HackerRank Solution in C++
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 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:
-
A.l < B.l
-
A.b < B.b and A.l == B.l
-
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 <= 10^5
Two boxes being compared using the < operator will not have all three dimensions equal.
Solution
#include<bits/stdc++.h>
using namespace std;
class Box {
private:
int length, breadth, height;
public:
// Constructors
Box() : length(0), breadth(0), height(0) {}
Box(int l, int b, int h) : length(l), breadth(b), height(h) {}
Box(const Box& box) : length(box.length), breadth(box.breadth), height(box.height) {}
// Getter functions
int getLength() { return length; }
int getBreadth() { return breadth; }
int getHeight() { return height; }
// Calculate volume
long long CalculateVolume() { return static_cast<long long>(length) * breadth * height; }
// Operator overloading <
bool operator<(const Box& b) {
if (length < b.length)
return true;
else if (length == b.length && breadth < b.breadth)
return true;
else if (length == b.length && breadth == b.breadth && height < b.height)
return true;
else
return false;
}
// Operator overloading <<
friend ostream& operator<<(ostream& out, const Box& B) {
out << B.length << " " << B.breadth << " " << B.height;
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();
}
