How to Sort a List in Descending Order in C++ - Step by Step Examples

How to Sort a List in Descending Order in C++ ?

Answer

To sort a list in descending order in C++ using std::list, you can use the list's member function sort with a custom comparison function.

✐ Examples

1 Sort a List of Integers in Descending Order

In this example,

We create a list named numbers using std::list with integer values.
We define a custom comparison function compare that compares elements in reverse order (descending).
We use the list's member function sort with compare as the argument to sort the list in descending order.
Finally, we iterate through the sorted list and print its elements to the console.

C++ Program

#include <iostream>
#include <list>

// Custom comparison function for descending order
bool compare(int a, int b) {
    return a > b;
}

int main() {
    std::list<int> numbers = {5, 2, 8, 1, 3};
    numbers.sort(compare);

    // Print sorted list
    for (int num : numbers) {
        std::cout << num << " ";
    }
    std::cout << std::endl;

    return 0;
}

Output

8 5 3 2 1

2 Sort a List of Strings in Descending Order

In this example,

We create a list named words using std::list with string values.
We define a custom comparison function compare that compares strings in reverse order (descending).
We use the list's member function sort with compare as the argument to sort the list of strings in descending order.
Finally, we iterate through the sorted list and print its elements to the console.

C++ Program

#include <iostream>
#include <list>
#include <algorithm>

// Custom comparison function for descending order
bool compare(const std::string& a, const std::string& b) {
    return a > b;
}

int main() {
    std::list<std::string> words = {"banana", "apple", "cherry"};
    words.sort(compare);

    // Print sorted list
    for (const std::string& word : words) {
        std::cout << word << " ";
    }
    std::cout << std::endl;

    return 0;
}

Output

cherry banana apple

Summary

In this tutorial, we learned How to Sort a List in Descending Order in C++ language with well detailed examples.

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How to Sort a List in Descending Order in C++ - Step by Step Examples

How to Sort a List in Descending Order in C++ ?

Answer

✐ Examples

1 Sort a List of Integers in Descending Order

C++ Program

Output

2 Sort a List of Strings in Descending Order

C++ Program

Output

Summary

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