Find Top 3 Largest Values in an Array

Code

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

void find_top_3(uint8_t *arr, uint8_t n) {
    // Your logic here
    for (uint8_t i = 0; i < n; i++) {
        int largest_index = i;

        for (uint8_t j = i; j < n; j++) {
            if (arr[j] > arr[largest_index]) {
                largest_index = j;
            }
        }
        if (largest_index != i) {
            int temp = arr[i];
            arr[i] = arr[largest_index];
            arr[largest_index] = temp;
        }
    }

    for (uint8_t i = 0; ((i < 3) && (i < n)); i++) {
        printf("%hhu ", arr[i]);
    }
}

int main() {
    uint8_t n;
    scanf("%hhu", &n);
    uint8_t arr[100];

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

    find_top_3(arr, n);
    return 0;
}

Solving Approach

 

 

 

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Input

6 10 90 20 80 70 30

Expected Output

90 80 70