Find Kth Smallest and Kth Largest Element

Code

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

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