Selection Sort Basic Example

SelectionSort.c

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define N 10

void selection_sort(int arr[], int size);
void swap(int arr[], int firstIndex, int secondIndex);

int main()
{
    int my_arr[N];

    srand(time(NULL));
    for (int i = 0; i < N; i++)
    {
        my_arr[i] = rand() % 99 + 11;
    }

    for (int k = 0; k < N; k++)
    {
        printf("%d\t", my_arr[k]);
    }
    selection_sort(my_arr, N);
    
    printf("\n");
    for (int k = 0; k < N; k++)
    {
        printf("%d\t", my_arr[k]);
    }
    return 0;
}

void selection_sort(int arr[], int size)
{
    int i, j, minIndex;
    for (i = 0; i < size; i++)
    {
        minIndex = i;
        for (int j = i; j < size; j++)
        {
            if (arr[j] < arr[minIndex])
                minIndex = j;
            swap(arr, i, minIndex);
        }
    }
}

void swap(int arr[], int firstIndex, int secondIndex)
{
    int temp;
    temp = arr[firstIndex];
    arr[firstIndex] = arr[secondIndex];
    arr[secondIndex] = temp;
}

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