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# C++ Program for Selection Sort

Hello Everyone!

In this tutorial, we will learn how to implement the Selection Sort Algorithm, in the C++ programming language.

To understand the Selection Sort Algorithm from scratch, we will highly recommend you to first visit our tutorial on the same, as we have covered it's step-by-step implementation, here: https://www.studytonight.com/data-structures/selection-sorting

Code:

``````#include <iostream>

#include<vector>

using namespace std;

//Separate method to print the list provided by the calling method
void printElems(vector < int > list) {
int i;
int len = list.size();
for (i = 0; i < len; i++)
cout << list[i] << "  ";

}

//The Selection sort logic
void selectionSort(vector < int > & a) {
int i, min, k, swap, location;
int len = a.size();

for (i = 0; i < len - 1; i++) {
min = a[i];
location = i;

for (k = i + 1; k < len; k++) {
if (min > a[k]) {
min = a[k];
location = k;
}
}

//Putting the minimum value of each pass to its correct location
swap = a[i];
a[i] = a[location];
a[location] = swap;

cout << "\n\nThe elements of the list after Pass " << i + 1 << " are  : ";
printElems(a);

}

}

int main() {
int i, num, n;

//Declaring the Vector to store the integer elements to be sorted
vector < int > v;

cout << "\n\nWelcome to Studytonight :-)\n\n\n";
cout << " =====  Program to implement the Selection Sort algo using Vectors, in CPP  ===== \n\n";

//taking input from the command line (user)
cout << " Enter the number of integers you want to sort : ";
cin >> n;
cout << "\n\n";

for (i = 0; i < n; i++) {
cout << "Enter number" << i + 1 << " :  ";
cin >> num;
v.push_back(num);

}

cout << "\n\nThe elements of the list before applying the Selection sort algorithm are : ";

//Calling the method to print the actual list
printElems(v);

//Calling the bubble sort algorithm
selectionSort(v);

cout << "\n\nThe elements of the list after applying the Selection sort algorithm are  : ";

//Calling the method to print the sorted list
printElems(v);

cout << "\n\n\n";

return 0;
}``````

Output:

For any query, feel free to ask in the comments section down below!

Keep Learning : )