Problem:- maps-STL Inheritance Hacker Rank Solution or maps-STL Inheritance hacker rank solution c++ orMulti Level Inheritance in java or maps-STL Inheritance solution or maps-STL Inheritance solution in C++ or maps-STL Inheritance hacker rank solution in Java or maps-STL Inheritance hacker rank solution c++ or maps-STL Inheritance hacker rank solution c++ or maps-STL Inheritance program in c or maps-STL Inheritance solution in C or Hacker Rank Solution For maps-STL Inheritance in C++ or maps-STL Inheritance in C++ or Hacker Rank solution for maps-STL Inheritance in C++.
Check This- Hacker rank Solution for C++ Sub Domain Introduction, Classes, STL, Inheritance.
Explanation:- Maps are a part of the C++ STL ( Standard Template Library ). Maps are associative containers that store elements formed by a combination of a key value and a mapped value, following a specific order.The mainly used member functions of maps are:
Map Template:
std::map <key_type, data_type>
Declaration:
map<string, int>m; //Creates a map m where key_type is of type string and data_type is of type int.
Size:
int length=m.size(); //Gives the size of the map.
Insert:
m.insert(make_pair("hello",9)); //Here the pair is inserted into the map where the key is "hello" and the value associated with it is 9.
Erasing an element:
m.erase(Val); //Erases the pair from the map where the key_type is Val.
Finding an element:
map<string,int>::iterator itr=m.find(val); //Gives the iterator to the element val if it is found otherwise returns m.end() .
Ex: map<string,int>::iterator itr=m.find("Maps"); //If Maps is not present as the key value then itr==m.end().
Accessing the value stored in the key:
To get the value stored in the key "MAPS" we can do m["MAPS"] or we can get the iterator using the find function and then by itr->second we can access the value.
Submit your solution here:- Click here
Solution:-
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <set>
#include <map>
#include <algorithm>
using namespace std;
int main()
{
/* vist http://www.programmingwithbasics.com */
map<string,int>s;
int q;
cin>>q;
for(int i=0;i<q;i++)
{
int t,n,m;
cin>>t;
switch(t)
{
case 1:
{
string name;
int marks;
cin>>name>>marks;
map<string,int>::iterator itr=s.find(name);
if(itr==s.end())
s.insert(make_pair(name,marks));
else
itr->second+=marks;
break;
}
case 2:
{
string name;
cin>>name;
s.erase(name);
break;
}
case 3:
{
string name;
cin>>name;
map<string,int>::iterator itr=s.find(name);
if(itr==s.end())
cout<<"0"<<endl;
else
cout<<itr->second<<endl;
break;
}
}
}
return 0;
}
Output:-
1.Compilation With Custom Input
2. All Testcase's
You May Also Like
1.Hacker Rank Solution Program In C++ For " Vector-Sort"
2.Hacker Rank Solution Program In C++ For " Vector-Erase "
3.Hacker Rank Solution Program In C++ For " Lower Bound-STL"
4.Hacker Rank Solution Program In C++ For " Sets-STL "
5.Hacker Rank Solution Program In C++ For " Print Pretty"
6. Hacker Rank solution for StringStream
7. Hacker Rank solution for Attribute Parser
8. Hacker Rank solution for Basic Data Types
9. Hacker Rank solution for Conditional Statements
10. Hacker Rank solution for " For Loop "
Check This- Hacker rank Solution for C++ Sub Domain Introduction, Classes, STL, Inheritance.
Explanation:- Maps are a part of the C++ STL ( Standard Template Library ). Maps are associative containers that store elements formed by a combination of a key value and a mapped value, following a specific order.The mainly used member functions of maps are:
Map Template:
std::map <key_type, data_type>
Declaration:
map<string, int>m; //Creates a map m where key_type is of type string and data_type is of type int.
Size:
int length=m.size(); //Gives the size of the map.
Insert:
m.insert(make_pair("hello",9)); //Here the pair is inserted into the map where the key is "hello" and the value associated with it is 9.
Erasing an element:
m.erase(Val); //Erases the pair from the map where the key_type is Val.
Finding an element:
map<string,int>::iterator itr=m.find(val); //Gives the iterator to the element val if it is found otherwise returns m.end() .
Ex: map<string,int>::iterator itr=m.find("Maps"); //If Maps is not present as the key value then itr==m.end().
Accessing the value stored in the key:
To get the value stored in the key "MAPS" we can do m["MAPS"] or we can get the iterator using the find function and then by itr->second we can access the value.
Submit your solution here:- Click here
Solution:-
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <set>
#include <map>
#include <algorithm>
using namespace std;
int main()
{
/* vist http://www.programmingwithbasics.com */
map<string,int>s;
int q;
cin>>q;
for(int i=0;i<q;i++)
{
int t,n,m;
cin>>t;
switch(t)
{
case 1:
{
string name;
int marks;
cin>>name>>marks;
map<string,int>::iterator itr=s.find(name);
if(itr==s.end())
s.insert(make_pair(name,marks));
else
itr->second+=marks;
break;
}
case 2:
{
string name;
cin>>name;
s.erase(name);
break;
}
case 3:
{
string name;
cin>>name;
map<string,int>::iterator itr=s.find(name);
if(itr==s.end())
cout<<"0"<<endl;
else
cout<<itr->second<<endl;
break;
}
}
}
return 0;
}
Output:-
You May Also Like
1.Hacker Rank Solution Program In C++ For " Vector-Sort"
2.Hacker Rank Solution Program In C++ For " Vector-Erase "
3.Hacker Rank Solution Program In C++ For " Lower Bound-STL"
4.Hacker Rank Solution Program In C++ For " Sets-STL "
5.Hacker Rank Solution Program In C++ For " Print Pretty"
6. Hacker Rank solution for StringStream
7. Hacker Rank solution for Attribute Parser
8. Hacker Rank solution for Basic Data Types
9. Hacker Rank solution for Conditional Statements
10. Hacker Rank solution for " For Loop "
0 Comments: