HACKERRANK C++ SOLUTIONs.
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Hackerank C++ solution.
using namespace std;
int main() {
cout<<"Hello, World!";
return 0;
}
using namespace std;
int main() {
/* Enter your code here. Read input from STDIN. Print output to STDOUT */
int a,b,c,sum=0;
cin>> a>>b>>c;
sum=a+b+c;
cout<< sum;
return 0;
}
using namespace std;
int main() {
int a;
long b;
char c;
float d;
double e;
// Complete the code.
cin>>a>>b>>c>>d>>e;
cout<< a<< endl;
cout<< b<< endl;
cout<< c<< endl;
printf("%.2f\n",d);
std::cout<< std::setprecision(9)<< e;
return 0;
}
using namespace std;
int main()
{
int n;
cin >> n;
cin.ignore(numeric_limits< streamsize>::max(), '\n');
if(n==1) cout<<"one";
else if(n==2) cout<<"two";
else if(n==3) cout<<"three";
else if(n==4) cout<<"four";
else if(n==5) cout<<"five";
else if(n==6) cout<<"six";
else if(n==7) cout<<"seven";
else if(n==8) cout<<"eight";
else if(n==9) cout<<"nine";
else cout<<"Greater than 9";
// Write Your Code Here
return 0;
}
using namespace std;
int main()
{
int a,b,n;
cin >> a>>b;
if(a<=b)
{
int s=a;
for(int i=0;i< 10;i++)
{
if(a==1) cout<<"one"<< endl;
else if(a==2) cout<<"two"<< endl;
else if(a==3) cout<<"three"<< endl;
else if(a==4) cout<<"four"<< endl;
else if(a==5) cout<<"five"<< endl;
else if(a==6) cout<<"six"<< endl;
else if(a==7) cout<<"seven"<< endl;
else if(a==8) cout<<"eight"<< endl;
else if(a==9 ) cout<<"nine"<< endl;
a=a+1;
if (a==10 || a==b+1) break;
}
for(int i=0;i< b-s;i++)
{
if(a%2==0 && a>9 ) cout<<"even"<< endl;
else if(a>9) cout<<"odd"<< endl;
a++;
if (a==b+1) break;
}
}
else
// Complete the code.
return 0;
}
using namespace std;
/*
Add `int max_of_four(int a, int b, int c, int d)` here.
*/
int max_of_four(int a,int b,int c,int d)
{
if(a>b && a>c && a>d) return a;
else if(b>a && b>c && b>d) return b;
else if(c>a && c>b && c>d) return c;
else return d;
}
int main() {
int a, b, c, d;
scanf("%d %d %d %d", &a, &b, &c, &d);
int ans = max_of_four(a, b, c, d);
printf("%d", ans);
return 0;
}
void update(int *a,int *b) {
int temp=*a;
(*a)=(*a)+(*b);
(*b)=temp-(*b);
if((*b)< 0) *b= (*b)-2*(*b);
// Complete this function
}
int main() {
int a, b;
int *pa = &a, *pb = & b;
scanf("%d %d", &a, &b);
update(pa, pb);
printf("%d\n%d", a, b);
return 0;
}
using namespace std;
int main()
{
/* Enter your code here. Read input from STDIN. Print output to STDOUT */
int n=0;
cin>>n;
int a[n],r[n];
for(int i=0;i< n;i++)
{
cin>>a[i];
}
int s=n-1;
for(int i=0;i< n+1;i++)
{
r[i]=a[s];
s=s-1;
}
for(int i=0;i< n;i++)
{
cout<< r[i]<< " ";
}
return 0;
}
using namespace std;
int main() {
// Complete the program
string a,b;
int l1,l2;
cin>>a;
cin>>b;
cout<< a.size()<< " "<< b.size()<< endl;
cout<< a+b<< endl;
char t=a[0];
a[0]=b[0];
b[0]=t;
cout<< a<< " "<< b;
return 0;
}
using namespace std;
/*
add code for struct here.
*/
int main() {
Student st;
cin >> st.age >> st.first_name >> st.last_name >> st.standard;
cout << st.age << " " << st.first_name << " " << st.last_name << " " << st.standard;
return 0;
}
using namespace std;
/*
Enter code for class Student here.
Read statement for specification.
*/
class Student
{
//private:
public:
int a,s;
string l,f;
void set_age(int age)
{ a=age;
}
void set_standard(int standard)
{ s=standard;
}
void set_first_name(string first_name)
{f=first_name;
}
void set_last_name(string last_name)
{ l=last_name;
}
int get_age()
{return a;}
string get_last_name()
{return l;}
string get_first_name()
{return f;}
int get_standard()
{return s;}
string to_string()
{
string x;
x=f+","+l;
return a+x+s;
}
};
int main() {
int age, standard;
string first_name, last_name;
cin >> age >> first_name >> last_name >> standard;
Student st;
st.set_age(age);
st.set_standard(standard);
st.set_first_name(first_name);
st.set_last_name(last_name);
cout << st.get_age() << "\n";
cout << st.get_last_name() << ", " << st.get_first_name() << "\n";
cout << st.get_standard()<< "\n";
cout << "\n";
cout << st.to_string();
return 0;
}
// Write your Student class here
class Student
{
int sum=0;int scores[5];
public:
void input()
{
for(int i=0;i< 5;i++)
{
cin>>scores[i];
sum=sum+scores[i];
}
}
int calculateTotalScore()
{
return sum;
}
};
//Implement the class Box
class Box
{
//l,b,h are integers representing the dimensions of the box
private:
int l,b,h;
public:
// The class should have the following functions :
// Constructors:
// Box();
Box()
{
l=0;b=0;h=0;
}
// Box(int,int,int);
Box(int length, int breadth, int height)
{
l=length;b=breadth;h=height;
}
// Box(Box);
Box(const Box &B)
{
l=B.l;b=B.b;h=B.h;
}
// int getLength(); // Return box's length
int getLength()
{return l;}
// int getBreadth (); // Return box's breadth
int getBreadth()
{return b;}
// int getHeight (); //Return box's height
int getHeight()
{return h;}
// long long CalculateVolume(); // Return the volume of the box
long long CalculateVolume()
{return (long long)l*b*h;}
//Overload operator < as specified
//bool operator<(Box& b)
bool operator<(Box& B)
{
int ll=B.getLength();
int bb=B.getBreadth();
int hh=B.getHeight();
if(h==hh && b==bb && l==ll)
return false;
else if (l< ll || (b< bb && l==ll) || (h< hh && b==bb && l==ll))
return true;
else
return false;
}
};
//Overload operator << as specified
//ostream& operator<<(ostream& out, Box& B)
ostream& operator<<(ostream& out, Box& B)
{
int l=B.getLength();
int b=B.getBreadth();
int h=B.getHeight();
return out<< l<<" "<< b<<" "<< h;
}
using namespace std;
class Person
{
public:
string name;
int age;
virtual void getdata()
{}
virtual void putdata(){}
};
static int c1=0;
static int c2=0;
class Professor : public Person
{
public:
int publications,cur_id;
void getdata()
{
cin>>name>>age>>publications;
}
void putdata()
{
c1=c1+1;
cur_id=c1;
cout<< name<<" "<< age<<" "<< publications<<" "<< cur_id<< endl;
}
};
class Student : public Person
{
public:
int marks[6],cur_id;
void getdata()
{
cin>>name>>age;
for(int i=0;i< 6;i++)
{
cin>>marks[i];
}
}
void putdata()
{
int sum=0;
c2=c2+1;
cur_id=c2;
for(int i=0;i< 6;i++)
{
sum=sum+marks[i];
}
cout<< name<<" "<< page<<" "<< sum<<" "<< cur_id<< endl;
}
};
int main(){
int n, val;
cin>>n; //The number of objects that is going to be created.
Person *per[n];
for(int i = 0;i < n;i++){
cin>>val;
if(val == 1){
// If val is 1 current object is of type Professor
per[i] = new Professor;
}
else per[i] = new Student; // Else the current object is of type Student
per[i]->getdata(); // Get the data from the user.
}
for(int i=0;i< n;i++)
per[i]->putdata(); // Print the required output for each object.
return 0;
}
using namespace std;
class Triangle{
public:
void triangle(){
cout<< "I am a triangle\n";
}
};
class Isosceles : public Triangle{
public:
void isosceles(){
cout<<"I am an isosceles triangle\n";
}
//Write your code here.
void description()
{
cout<<"In an isosceles triangle two sides are equal\n";
}
};
int main(){
Isosceles isc;
isc.isosceles();
isc.description();
isc.triangle();
return 0;
}
/*
* Create classes Rectangle and RectangleArea
*/
class Rectangle
{
public:
int width,height;
void display()
{
cout<< width<<" "<< height"\n";
}
};
class RectangleArea : public Rectangle
{
public:
void read_input()
{
cin>>width>>height;
}
void display()
{
cout<< width*height;
}
};
using namespace std;
class Triangle{
public:
void triangle(){
cout<<"I am a triangle\n";
}
void description()
{
cout<<"In an isosceles triangle two sides are equal";
}
};
class Isosceles : public Triangle{
public:
void isosceles(){
cout<<"I am an isosceles triangle\n";
}
};
class Equilateral : public Isosceles
{
public:
void equilateral()
{
cout<<"I am an equilateral triangle\n";
}
};
int main(){
Equilateral eqr;
eqr.equilateral();
eqr.isosceles();
eqr.triangle();
return 0;
}