Find Kth Smallest and Kth Largest Element

Code

#include <stdio.h>
#include <stdint.h>

void sort_array(uint8_t *arr, uint8_t n) {
    // Selection Sort
    int temp;
    for(int i =0; i <n-1;i++)
    {
        int min_ind = i;
        for(int j = i+1;j< n;j++)
        {
            if(arr[j] < arr[min_ind])
            {
                min_ind = j;
            }
        }
        temp = arr[i];
        arr[i] = arr[min_ind];
        arr[min_ind] = temp;

    }


}

void find_kth_elements(uint8_t *arr, uint8_t n, uint8_t k, uint8_t *smallest, uint8_t *largest) {
    // Your logic here
    sort_array(arr,n);
    *smallest = arr[k - 1];
    *largest = arr[n-k];
}

int main() {
    uint8_t n, k;
    scanf("%hhu", &n);
    uint8_t arr[100];
    
    for (uint8_t i = 0; i < n; i++) {
        scanf("%hhu", &arr[i]);
    }

    scanf("%hhu", &k);

    uint8_t smallest, largest;
    find_kth_elements(arr, n, k, &smallest, &largest);

    printf("%hhu %hhu", smallest, largest);
    return 0;
}

Solving Approach