ДЗ №9 (уникальный)

#include <iostream>
using namespace std;
int main()
{
    const int n = 5;
    int a[n] = { 1,1,213,2,2 };
    int kol_vo = 0;
    int i, j;
    for (i = 0; i < n; i++)
    {
        bool b = false;
        for (j = i + 1; j < n && a[i] != -9999; j++)
        {
            if ((i != j) && a[i] == a[j])
            {
                b = true;
                a[j] = -9999;

            }
        }
        if (!b && a[i] != -9999)
            cout<<"unique number=" << a[i];
    }
    system("pause");
    return 0;
}