Create a String array with locks (with duplicate locks) that came to the online store. Create two kinds of collections HashSet and TreeSet in which we could add our charm. Display a list of HashSet and TreeSet at most once out of one.

struct lock {
  int number;
  char name[30];
  int year;
};

void create(lock *arr) {
  for (int i = 0; i < 5; i++)
  {
    printf("Enter number: ");
    scanf("%d/n", &arr[i].number);
    printf("Enter name: ");
    scanf("%s/n", arr[i].name);
    printf("Enter year: ");
    scanf("%d/n", &arr[i].year);
  }
}

void display(lock *arr) {
  for (int i = 0; i < 5; i++)
  {
    printf("Lock number %d\n", arr[i].number);
    printf("Name %s\n", arr[i].name);
    printf("Year %d\n", arr[i].year);
  }
}

void main()
{
  lock arr[5];
  create(arr);
  display(arr);
}