Algorithm

Problem Name: Box It!

In this HackerRank Functions in C++ programming problem solution,

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 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

functions:

• int getLength() - Return box's length
• int getHeight() - Return box's height
• long long CalculateVolume() - Return the volume of the box

for the class Box. Box A < Box B if:

1. A.l  < B.l
2. 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.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.

Code Examples

#1 Code Example with C++ Programming

Code - C++ Programming


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

class Box{
private:
int l, b, h;
public:
Box(int a = 0, int bb = 0, int c = 0){
l = a;
b = bb;
h = c;
}
int getLength(){
return l;
}
return b;
}
int getHeight(){
return h;
}
long long CalculateVolume(){
return (long long)l * b * h;
}

bool operator < (Box& B){                         //Overload operator < as specified
if((l < B.l) || (b < B.b && l == B.l) || (l == B.l && b == B.b && h < B.h))
return true;
else
return false;

}
friend ostream& operator<<(ostream& out, Box& A){
out << A.l << " " << A.b << " " << A.h;
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(void)
{
check2(>;
}

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