Im having trouble with shuffling [on hold]

im having problem with duplicates in my solitaire

> srand(time(NULL));
> 
>   int los;
> 
>   int random;     karta temp;
> 
>   for (los = 0; los < 52; los++)
> 
>   {       random = rand() % 52;
> 
>       temp = tablicatali[los];        tablicatali[los] = tablicatali[random];
>       tablicatali[random] = temp;     }

I would love your feedback <3