#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <time.h>
using namespace std;

void init(int *arr, int size);
void display(int *arr, int size);
int *deleteSame(int *arr, int &size);

int main() {
    int size;

    cout << "input size of array " << endl;
    cin >> size;
    int *arr = new int[size];
    init(arr, size);
    display(arr, size);
    arr = deleteSame(arr, size);
    cout << endl;
    cout << "unique array: " << endl;
    display(arr, size);
    delete[] arr;
    system("pause");
    return 0;
}

void init(int *arr, int size) {
    srand(time(0));
    for (int i = 0; i < size; i++)
    {
        arr[i] = rand() % 10;
    }
}
void display(int *arr, int size) {
    for (int i = 0; i < size; i++)
    {
        cout << *(arr + i) << "  ";
    }
}



int *deleteSame(int *arr, int &size) {
    if (arr != NULL)
    {
        int c = 1;
        int newsize = 0;
        int *temp = new int[size];
        for (int i = 0; i < size; i++)
        {
            *(temp + i) = *(arr + i);
        }

        for (int i = 0; i < size; i++)
        {
            for (int j = i + 1; j < size; j++)
            {
                if (*(temp + i) != *(arr + j))
                {
                    *(temp + c) = *(arr + j);
                    c++;
                    newsize++;
                }
            }
        }



        int *temp2 = new int[newsize];
        for (int i = 0; i < newsize; i++)
        {
            *(temp2 + i) = *(temp + i);
        }
        delete[] temp;
        return temp2;
    }
}