Hackerrank_c++

.vscode/settings.json

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+{
+    "files.associations": {
+        "algorithm": "cpp"
+    }
+}

Hackerrank_C++/Arrays_Introduction.cpp

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+#include <cmath>
+#include <cstdio>
+#include <vector>
+#include <iostream>
+#include <algorithm>
+using namespace std;
+
+
+int main() {
+    int n;
+    cin>>n;
+    int arr[n];
+    for(int i=0; i<n; i++){
+        cin>>arr[i];
+    }
+
+    int l=0, h=n-1;
+
+    while(l<h){
+        int temp=arr[l];
+        arr[l]=arr[h];
+        arr[h]=temp;
+        l++;
+        h--;
+    }
+
+    for(int i=0; i<n; i++){
+        cout<<arr[i]<<" ";
+    }
+
+    return 0;
+}

Hackerrank_C++/Attribute_Parser.cpp

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+#include <cmath>
+#include <cstdio>
+#include <vector>
+#include <iostream>
+#include <algorithm>
+#include <bits/stdc++.h>
+using namespace std;
+
+int main()
+{
+    int n, q,i;
+    cin>>n>>q;
+    string temp;
+    vector<string> hrml;
+    vector<string> quer;
+    cin.ignore();
+
+    for(i=0;i<n;i++)
+    {
+        getline(cin,temp);
+        hrml.push_back(temp);
+    }
+    for(i=0;i<q;i++)
+    {
+        getline(cin,temp);
+        quer.push_back(temp);
+    }
+
+    map<string, string> m;
+    vector<string> tag;
+
+    for(i=0;i<n;i++)
+    {
+        temp=hrml[i];
+        temp.erase(remove(temp.begin(), temp.end(), '\"' ),             temp.end());
+        temp.erase(remove(temp.begin(), temp.end(), '>' ),              temp.end());
+
+        if(temp.substr(0,2)=="</")
+        {
+            tag.pop_back();
+        }
+        else
+        {
+            stringstream ss;
+            ss.str("");
+            ss<<temp;
+            string t1,p1,v1;
+            char ch;
+            ss>>ch>>t1>>p1>>ch>>v1;
+            string temp1="";
+            if(tag.size()>0)
+            {
+                temp1=*tag.rbegin();
+                temp1=temp1+"."+t1;
+            }
+            else
+            {
+                temp1=t1;
+            }
+            tag.push_back(temp1);
+            m[*tag.rbegin()+"~"+p1]=v1;
+            while(ss)
+            {
+                ss>>p1>>ch>>v1;
+                m[*tag.rbegin()+"~"+p1]=v1;
+            }
+        }
+
+    }
+
+    for(i=0;i<q;i++)
+    {
+        if (m.find(quer[i]) == m.end())
+        {
+            cout << "Not Found!\n";
+        }
+        else
+        {
+            cout<<m[quer[i]]<<endl;
+        }
+    }
+    return 0;
+}

Hackerrank_C++/Basic_Data_Types.cpp

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+#include <iostream>
+#include <cstdio>
+#include <iomanip>
+using namespace std;
+int main()
+{
+    int a;
+    long b;
+    char c;
+    float d;
+    double e;
+    cin>>a;
+    cin>>b;
+    cin>>c;
+    cin>>d;
+    cin>>e;
+    cout << setprecision(20)<< a<< endl;
+    cout << setprecision(20)<< b<< endl;
+    cout << setprecision(20)<< c<< endl;
+    cout << setprecision(20)<< d<< endl;
+    cout << setprecision(20)<< e<< endl;
+    return 0;
+}
+

Hackerrank_C++/Box_It!.cpp

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+#include<bits/stdc++.h>
+
+using namespace std;
+//Implement the class Box  
+class Box{
+    private:
+      int l, b, h; //l,b,h are integers representing the dimensions of the box
+    public:
+       //Default
+      Box():l(0), b(0), h(0) {}
+
+      Box(int x, int y, int z){
+          l = x;
+          b = y;
+          h = z;
+      }
+
+      Box(const Box& B){
+        this->l = B.l;
+        this->b = B.b;
+        this->h = B.h;
+      }
+
+        //Getter
+      int getLength() const {  //Return box's length
+          return l;
+      }
+
+      int getBreadth() const { // Return box's breadth
+          return b;
+      }
+
+      int getHeight() const {  //Return box's height
+          return h;  
+      }
+
+      long long CalculateVolume(){  
+          long long volume =(long long) l*b*h;
+          return volume;                        // Return the volume of the box
+      }
+
+      bool operator<(Box& other){
+          bool condition1 = l < other.l;
+          bool condition2 = b < other.b && l == other.l;
+          bool condition3 = h < other.h && b == other.b && h == other.h;
+
+          if(condition1 || condition2 || condition1)
+              return true;
+
+            return false;       
+      }
+       //Friend function
+      friend ostream& operator<<(ostream& out,  Box& B){
+          out << B.l <<" "<< B.b <<" "<< B.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()
+{
+	check2();
+}

Hackerrank_C++/Class.cpp

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+#include <bits/stdc++.h>
+using namespace std;
+
+class Student {
+  private: 
+        int m_age;
+        int m_standard;
+        string m_first_name;
+        string m_last_name;
+
+  public:
+
+    void set_age( int  age){
+        m_age = age;
+    }
+
+    void set_standard(int standard){
+        m_standard = standard;
+    }
+
+    void set_first_name(string firstName){
+        m_first_name = firstName;
+    }
+
+    void set_last_name(string lastName){
+        m_last_name = lastName;
+    }
+
+    int get_age(){
+        return m_age;
+    }
+
+    int get_standard(){
+        return m_standard;
+    }
+
+    string get_first_name(){
+        return m_first_name;
+    }
+
+    string get_last_name(){
+        return m_last_name;
+    }
+
+};
+
+
+
+int main(){
+    Student st;
+    int m_age, m_standard;
+    string m_first_name, m_last_name;
+    char c=',';
+    cin>>m_age>>m_first_name>>m_last_name>>m_standard;
+
+    st.set_age(m_age);
+    st.set_first_name(m_first_name);
+    st.set_last_name(m_last_name);
+    st.set_standard(m_standard);
+
+    cout<<st.get_age()<<"\n";
+    cout<<st.get_last_name()<<c<<" "<<st.get_first_name()<<"\n";
+    cout<<st.get_standard()<<"\n";
+    cout<<"\n";
+    cout<<st.get_age()<<c<<st.get_first_name()<<c<<st.get_last_name()<<c<<st.get_standard();
+
+    return 0;
+}

Hackerrank_C++/Classes and Objects.cpp

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+#include <cmath>
+#include <cstdio>
+#include <vector>
+#include <iostream>
+#include <algorithm>
+#include <cassert>
+using namespace std;
+
+class Student{
+  private:
+    int sum;
+    int m[5];
+  public:
+  Student(){
+    sum=0;
+  }
+     void input(){
+        for(int i=0; i<5; i++){
+          cin>>m[i];
+          sum+=m[i];
+        }
+     }
+     int calculateTotalScore(){
+        return sum;
+     }
+
+};
+int main() {