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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) {
    uint8_t c1 = arr[0], c2 = arr[0], c3 = arr[0];

    if (n == 1) {
        printf("%d\n", arr[0]);
    } else if (n == 2) {
        if (arr[0] >= arr[1]) {
            printf("%d %d\n", arr[0], arr[1]);
        }else {
            printf("%d %d\n", arr[1], arr[0]);
        }
    }else {
        for (uint8_t i=0; i<n; i++) {
            if (arr[i] >= c1) {
                c3 = c2;
                c2 = c1;
                c1 = arr[i];         
            } else if (arr[i] >= c2) {
                c3 = c2;
                c2 = arr[i];
            } else if (arr[i] >= c3) {
                c3 = arr[i];
            }
        }      
        printf("%d %d %d\n", c1, c2, c3);
    }
}

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