C++ - SORT LIST ELEMENTS

How to sort a List in Ascending Order?

The sort() Method is used to sort a List in Ascending order.

Example :

#include <iostream>
#include <list>

using namespace std;

int main() {

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

Output :

Kriti
Mohan
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,

Then we have used the sort() method to sort the List x in ascending order.

x.sort();

And the List x gets sorted with Kriti as the first value, Mohan second and Salim as the third.

And we get the below output.

Output :

Kriti
Mohan
Salim

How to sort a List with numbers in Increasing Order?

Even here the sort() Method is used to sort a List with numbers in Increasing/Deceasing Order.

At first let us see an example to sort a List with numbers in Increasing order.

Example :

#include <iostream>
#include <list>

using namespace std;

int main() {

    list<int> x = {5, 3, 2, 4};
        
    x.sort();
    
    for (int data : x) {  
        cout << data << endl;  
    }
    
    return 0;    
}

Output :

2
3
4
5

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

list<int> x = {5, 3, 2, 4};

Below is how the values are positioned in the List,

Then we have used the sort() method to sort the List x in increasing order.

x.sort();

And the numbers in the List x gets sorted.

And we get the below output.

Output :

2
3
4
5

Next let us see, how to sort a List in Descending order.

How to sort a List with numbers in Descending Order?

Example :

#include <iostream>
#include <list>

using namespace std;

int main() {

    list<int> x = {5, 3, 2, 4};
        
    x.sort();
    x.reverse();
    
    for (int data : x) {  
        cout << data << endl;  
    }
    
    return 0;    
}

Output :

5
4
3
2

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

list<int> x = {5, 3, 2, 4};

Below is how the values are positioned in the List,

Then we have used the sort() method to sort the List x in increasing order.

x.sort();

Then we have used the reverse() method to reverse the List

x.reverse();

And the List x gets sorted in decreasing order.

And we get the below output.

Output :

5
4
3
2

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