101-list-of-s-objects

public List<sObject> getListOfsObject(List<Account> accounts, List<Contact> contacts)
{
    if (accounts == null && contacts == null) return new List<SObject>();

    List<SObject> results = new List<SObject>();

    if (accounts != null) {
        for (Account a : accounts)
        {
            results.add(a);
        }
    }
    if (contacts != null)
    {
        for (Contact c : contacts)
        {
            results.add(c);
        }
    }   
    return results;
}