How can I generate random numbers in a array without each one of them repeating?

Question

card game

Answer 1

You could just generate a new random number, if it's already in the array... or use a set. This way it would already be sorted.

Answer 2

I mean lyk it it must not print 2334

Answer 3

#include <algorithm>
...
int arr[] { 1,2,3,4,5 };
unsigned len = sizeof(arr)/sizeof(arr[0]);

std::random_shuffle(&arr[0], &arr[len - 1];

// Now it is shuffled.