Unique Records

C# records compare by value: two records are equal when all their fields are equal, even if they are different objects. That makes removing duplicates easy.

Each record is written name,city. Trim spaces around both fields; after trimming, two records are equal when both fields match exactly (case matters).

Implement unique_records(records).

Input

records: The records, in order.

Output

Return the distinct records in the order they first appear, written name,city with the trimmed fields.

Ограничения

0 ≤ number of records ≤ 100,000

Each field has 1 to 30 characters and no commas

Примеры

Ввод:
records = ["Ada,London", "Lin, Hanoi", "Ada , London"]

Ожидаемый вывод:
expected = ["Ada,London", "Lin,Hanoi"]

Ввод:
std::vector<std::string> records = {"Ada,London", "Lin, Hanoi", "Ada , London"};

Ожидаемый вывод:
std::vector<std::string> expected = {"Ada,London", "Lin,Hanoi"};

Ввод:
string[] records = new string[] {"Ada,London", "Lin, Hanoi", "Ada , London"};

Ожидаемый вывод:
string[] expected = new string[] {"Ada,London", "Lin,Hanoi"};

Ввод:
records = ["ada,Paris", "Ada,Paris"]

Ожидаемый вывод:
expected = ["ada,Paris", "Ada,Paris"]

Ввод:
std::vector<std::string> records = {"ada,Paris", "Ada,Paris"};

Ожидаемый вывод:
std::vector<std::string> expected = {"ada,Paris", "Ada,Paris"};

Ввод:
string[] records = new string[] {"ada,Paris", "Ada,Paris"};

Ожидаемый вывод:
string[] expected = new string[] {"ada,Paris", "Ada,Paris"};

Ссылки

Это задание адаптировано для CodeUtility. Следуйте условию и ограничениям выше.

• Microsoft Learn, Records