public PhonebookContacts[] List(int first, int contactPhoneNumbersCount)
{
if (first < 0 || first + contactPhoneNumbersCount > this.contactsDictionary.Count) //10
{
throw new ArgumentOutOfRangeException("Invalid contact details! Please check the contact phones count. Must be in range[1..10]");
}
PhonebookContacts[] phoneContactsList = new PhonebookContacts[contactPhoneNumbersCount];
for (int i = first; i <= first + contactPhoneNumbersCount - 1; i++)
{
PhonebookContacts phonebookItemsSorted = this.sortedPhonebook[i];
phoneContactsList[i - first] = phonebookItemsSorted;
}
return phoneContactsList;
}
public bool AddPhone(string contactName, IEnumerable<string> phoneNumbers)
{
string contactNameToLower = contactName.ToLowerInvariant();
PhonebookContacts phonebookContactEntries;
bool contactPhoneIsAdded = !this.contactsDictionary.TryGetValue(contactNameToLower, out phonebookContactEntries);
if (contactPhoneIsAdded)
{
phonebookContactEntries = new PhonebookContacts();
phonebookContactEntries.ContactName = contactName;
phonebookContactEntries.PhonebookContactsData = new SortedSet<string>();
this.contactsDictionary.Add(contactNameToLower, phonebookContactEntries);
this.sortedPhonebook.Add(phonebookContactEntries);
}
//probably else - return exception
foreach (var number in phoneNumbers)
{
this.contactsMultiDictionary.Add(number, phonebookContactEntries);
}
phonebookContactEntries.PhonebookContactsData.UnionWith(phoneNumbers);
return contactPhoneIsAdded;
}