#include <stdio.h>
#include <time.h>
 
int main(void)
{
    int numbers[52];
    int i, j, temp;
    srand(time(NULL));
 
    // putting numbers from 1 to 52 into the 'numbers' array
    for(i=0; i<52; i++)
        numbers[i] = i + 1;
 
    // shuffling using Fisher-Yates shuffle algorithm
    for(i=51; i>=1; i--)
    {
        j = rand()%(i+1);
        temp = numbers[i];
        numbers[i] = numbers[j];
        numbers[j] = temp;
    }
 
    // printing the array
    for(i=0; i<52; i++)
        printf("%d, ", numbers[i]);
 
    return 0;
}

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