More elegant way to check for duplicates in C++ array?

Question

I wrote this code in C++ as part of a uni task where I need to ensure that there are no duplicates within an array:

// Check for duplicate numbers in user in         


        

Answer 1

The following solution is based on sorting the numbers and then removing the duplicates:

#include 

int main()
{
    int userNumbers[6];

    // ...

    int* end = userNumbers + 6;
    std::sort(userNumbers, end);
    bool containsDuplicates = (std::unique(userNumbers, end) != end);
}