How to Sort an Array in C++ - Step by Step Examples

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How to Sort an Array in C++ ?

Answer

To sort an array in C++, you can use the std::sort() function from the algorithm library.

✐ Examples

1 Sort Integer Array in Ascending Order

In this example,

We include the necessary header files for input-output and sorting algorithms.
We create a vector numbers with values 5, 2, 8, 1, 6.
We use the std::sort() function from the algorithm library to sort the vector in ascending order.
Finally, we print the sorted vector numbers to the console.

C++ Program

#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::vector<int> numbers = {5, 2, 8, 1, 6};
    std::sort(numbers.begin(), numbers.end());
    std::cout << "Sorted array in ascending order: ";
    for (int num : numbers) {
        std::cout << num << " ";
    }
    return 0;
}

Output

Sorted array in ascending order: 1 2 5 6 8

2 Sort Integer Array in Descending Order

In this example,

We include the necessary header files for input-output and sorting algorithms.
We create a vector numbers with values 5, 2, 8, 1, 6.
We define a custom comparator function compare that sorts in descending order.
We use the std::sort() function with our custom comparator to sort the vector in descending order.
Finally, we print the sorted vector numbers to the console.

C++ Program

#include <iostream>
#include <vector>
#include <algorithm>

bool compare(int a, int b) {
    return a > b;
}

int main() {
    std::vector<int> numbers = {5, 2, 8, 1, 6};
    std::sort(numbers.begin(), numbers.end(), compare);
    std::cout << "Sorted array in descending order: ";
    for (int num : numbers) {
        std::cout << num << " ";
    }
    return 0;
}

Output

Sorted array in descending order: 8 6 5 2 1

Summary

In this tutorial, we learned How to Sort an Array in C++ language with well detailed examples.

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How to Sort an Array in C++ - Step by Step Examples

How to Sort an Array in C++ ?

Answer

✐ Examples

1 Sort Integer Array in Ascending Order

C++ Program

Output

2 Sort Integer Array in Descending Order

C++ Program

Output

Summary

More C++ Arrays Tutorials