func_code_string: #include <bits/stdc++.h>   int main() {     int n, i, j, k = 0, p;     scanf( %d , &n);     int a[n], b[n];     for (i = 0; i < n; i++) scanf( %d , &a[i]);     for (i = n - 1; i >= 0; i--) {       j = i + 1;       p = 1;       while (j <= n - 1) {         if (a[i] == a[j]) {           p = -1;           break;         }         j++;       }       if (p == 1) {         b[k] = a[i];         k++;       }     }     printf( %d n , k);     for (j = k - 1; j >= 0; j--) printf( %d  , b[j]);     printf(  n );   }   