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
    int largest[3] = { -1, -1, -1};
    for(uint8_t i=0; i<n; i++)
    {
        if(arr[i] > largest[0])
        {
            largest[2] = largest[1];
            largest[1] = largest[0];
            largest[0] = arr[i];
        }
        else if(arr[i] > largest[1])
        {
            largest[2] = largest[1];
            largest[1] = arr[i];
        }
        else if(arr[i] > largest[2])
            largest[2] = arr[i];
    }

    for(uint8_t i=0; i<3; i++)
    {
        if(largest[i] != -1)
            printf("%d ", largest[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