C++ - INSERT IN LIST

How to insert a new Item at the end of the List?

Let us say, we have a List that contains three names, Mohan, Kriti and Salim. And we want to insert a new name Mika at the end of the List.

We can use the push_back() Method to achieve the above.

Example :

#include <iostream>
#include <list>

using namespace std;

int main() {

    list<string> x = {"Mohan", "Kriti", "Salim"};
    x.push_back("Mika");
    for (string data : x)  
    {  
        cout << data << endl;  
    }
    
    return 0;    
}

Output :

Mohan
Kriti
Salim
Mika

So, in the above code we have created a List and initialised to the variable x.

list<string> x = {"Mohan", "Kriti", "Salim"};

Below is how the values are positioned in the List,

Next, we have used the push_back() method to add the new name Mika at the end of the List.

x.push_back("Mika");

And we get the below output,

Output :

Mohan
Kriti
Salim
Mika

How to insert a new Item at the beginning of the List?

Let us say, we have a List that contains three names, Mohan, Kriti and Salim. And we want to insert a new name Mika at the beginning of the List.

We can use the push_front() Method to achieve the above.

Example :

#include <iostream>
#include <list>

using namespace std;

int main() {

    list<string> x = {"Mohan", "Kriti", "Salim"};
    x.push_front("Mika");
    for (string data : x)  
    {  
        cout << data << endl;  
    }
    
    return 0;    
}

Output :

Mika
Mohan
Kriti
Salim

So, in the above code we have created a List and initialised to the variable x.

list<string> x = {"Mohan", "Kriti", "Salim"};

Below is how the values are positioned in the List,

Next, we have used the push_front() method to add the new name Mika at the end of the List.

x.push_front("Mika");

And we get the below output,

Output :

Mohan
Kriti
Salim
Mika

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