C++ Selection sort Exercise: Sort a collection of integers using the Selection sort

Last update on December 20 2024 12:31:45 (UTC/GMT +8 hours)

Write a C++ program to sort a collection of integers using Selection sort.

Sample Solution:

C++ Code :

#include <algorithm>
#include <iterator>
#include <iostream>

// Selection sort implementation using ForwardIterator
template<typename ForwardIterator>
void selection_sort(ForwardIterator begin, ForwardIterator end) {
    for (auto i = begin; i != end; ++i) {
        // Swap the current element with the minimum element in the unsorted portion of the range
        std::iter_swap(i, std::min_element(i, end));
    }
}

// Main function
int main() {
    int a[] = {125, 0, 695, 3, -256, -5, 214, 44, 55};

    // Displaying the original numbers in the array
    std::cout << "Original numbers:\n";
    copy(std::begin(a), std::end(a), std::ostream_iterator<int>(std::cout, " "));
    std::cout << "\n";

    // Sorting the array using selection sort
    selection_sort(std::begin(a), std::end(a));

    // Displaying the sorted numbers after selection sort
    std::cout << "Sorted numbers:\n";
    copy(std::begin(a), std::end(a), std::ostream_iterator<int>(std::cout, " "));
    std::cout << "\n";

    return 0;
}

Sample Output:

Original numbers:
125 0 695 3 -256 -5 214 44 55 
Sorted numbers:
-256 -5 0 3 44 55 125 214 695

Flowchart:

C++ Code Editor:

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