Question

How to get all the unique elements of an array in C

Answer 1

#include <stdio.h>

void printUniqueFrequencies(int arr[], int size) {
    int frequency[10] = {0};

    for (int i = 0; i < size; i++) {
        frequency[arr[i]]++;
    }

    for (int i = 0; i < 10; i++) {
        if (frequency[i] == 1)
            printf("%d: - %d time\n", i, frequency[i]);
    }
}

int main() {
    int arr[] = {4, 1, 2, 8, 9, 5, 1, 7, 8, 8, 8};
    int size = sizeof(arr) / sizeof(arr[0]);

    printUniqueFrequencies(arr, size);

    return 0;
}



/*
run:

2: - 1 time
4: - 1 time
5: - 1 time
7: - 1 time
9: - 1 time

*/

 

70+ SQL courses for beginners and professionals