intersection of two arrays.cpp

#include <bits/stdc++.h>
using namespace std;
int main() {
    int i, k = 0, n, j;
    cin >> n;
    int arr[n], brr[n], crr[n];
    for (i = 0; i < n; i++)
        cin >> arr[i];
    for (i = 0; i < n; i++)
        cin >> brr[i];
    for (i = 0; i < n; i++) 
    {
        for (j = 0; j < n; j++) 
        {
            if (arr[i] == brr[j])
            {
                crr[k] = arr[i];
                k++;
                brr[j] = NULL;
                break;
            }
        }
    }
    sort (crr, crr+k);
    cout << "[";
   for (i = 0; i < k; i++)
       {
        cout << crr[i];
         if (i < k-1)
             cout << ", ";
         else if (i == k-1)
            cout << "]";
       }

    return 0;
}